TN 9ஆம் வகுப்பு அறிவியல் விலங்குகளின் உறுப்பு மண்டலங்கள் முக்கியமான 2,3,&5 மதிப்பெண் வினாக்கள் விடைகளுடன் Science Organ Systems in Animals Important 2,3,&5 Marks Questions with Answers - by Sneha - Sep 07, 2024 - View & Read

TN 9ஆம் வகுப்பு வேதியியல் திரவங்கள் முக்கியமான மதிப்பெண் வினாக்கள் விடைகளுடன் Chemistry Fluids 2 3 5 marks Questions With Answers Tamil Medium - by USERS ADMIN - Sep 04, 2024 - View & Read

TN 9ஆம் வகுப்பு வேதியியல் பயன்பாட்டு வேதியியல் முக்கியமான மதிப்பெண் வினாக்கள் விடைகளுடன் Chemistry Applied Chemistry 2 3 5 marks Questions With Answers Tamil Medium - by USERS ADMIN - Sep 04, 2024 - View & Read

TN 9th Science Universe Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Sound Important 3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Periodic Classification of Elements Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Motion Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Measurement Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 11th Science Magnetism and Electromagnetism Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Chemical Bonding Important 3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Atomic Structure Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science World of Microbes Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Plant Physiology Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Acids, Bases and Salts Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Organisation of Tissues Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Organ Systems in Animals Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Nutrition and Health Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Light Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Heat Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Fluids Important 3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Environmental Science Important 3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Electric Charge And Electric Current Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Economic Biology Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Applied Chemistry Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Animal Kingdom Important 2,3 & 5 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 05, 2024 - View & Read

TN 9th Science Magnetism and Electromagnetism 35 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Light 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Heat 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Fluids 45 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Environmental Science and LibreOffice Impress 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Electric Charge And Electric Current 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Chemical Bonding 40 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th science Carbon and its Compounds 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Applied Chemistry 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th science Animal Kingdom 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Acids, Bases and Salts 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Plant Physiology 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Aug 01, 2024 - View & Read

TN 9th Science Periodic Classification of Elements 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Jul 31, 2024 - View & Read

TN 9th Science Organisation of Tissues 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Jul 31, 2024 - View & Read

TN 9th Science Organ Systems in Animals 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Jul 31, 2024 - View & Read

TN 9th Science Nutrition and Health 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Jul 31, 2024 - View & Read

TN 9th Science Motion 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Jul 31, 2024 - View & Read

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TN 9th Science Matter around us 50 Important 1 Marks Questions With Answers Book Back and Creative - by Sneha - Jul 31, 2024 - View & Read

TN 9th Science half yearly original question paper with answers 2023 - by QB Admin - Jan 01, 2024 - View & Read

9th Standard English Medium Science Subject Measurement Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define measurement

• 2)

  Define standard unit.

• 3)

  What do you know about pitch of screw gauge?

• 4)

  Convert: 300 K into Celsius scale,

• 5)

  Convert: 104°F into Celsius scale.

9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  According to cartesion sign convention, which mirror and which lens has negative focal length?

• 2)

  Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image

• 3)

  If an object is placed at the focus of a concave mirror, where is the image formed?

• 4)

  Why does a ray of light bend when it travels from one medium to another?

• 5)

  Concave mirrors are used by dentists to examine teeth. Why?

9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The speed of light in air is 3 \(\times\) 10⁸ms^-1 and in glass it is 2 \(\times\) 10⁸ms^-1 what is the refractive index of glass

• 2)

  Give two examples of transparent medium that are denser than air

• 3)

  A coin in a glass beaker appears to rise as the beaker is slowly filled with water, why?

• 4)

  Name the spherical mirror(s) that has/have 
  i) Virtual principal focus
  ii) Real principal focus

• 5)

  What is speed of light in vacuum? 

9th Standard English Medium Science Subject Matter around us Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  How gaseous pressure arises?

• 2)

  Which state of matter has the highest kinetic energy?

• 3)

  Define a solute and a solvent

• 4)

  What is meant by desalination of sea water?

• 5)

  'Shake well before use'. This is the instruction on a bottle of medicine. What kind of a mixture is contained in the bottle? Give reason.

9th Standard English Medium Science Subject Matter around us Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?

• 2)

  Name the method you would adopt to separate a mixture of ammonium chloride and common salt.

• 3)

  Name the sublimate that you will be getting when you heat a mixture of
  i. Iodine and sand
  ii. Sodium chloride and ammonium chloride.

• 4)

  You have just won a medal made of 22-carat gold. Have you just procured a pure substance or impure substance?

• 5)

  What produces more severe burns, boiling water or steam? Why?

9th Standard English Medium Science Subject Atomic Structure Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Name an element which has the same number of electrons in its first and second shell

• 2)

  Compare the charge and mass of protons and electrons.

• 3)

  For an atom ‘X’, K, L and M shells are completely filled. How many electrons will be present in it?

• 4)

  Arrange the following in the increasing order of atomic number
  Calcium, Silicon, Boron, Magnesium, Oxygen, Helium, Neon, Sulphur, Fluorine and Sodium

9th Standard English Medium Science Subject Plant Physiology Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.

  Stimulus	Light	Gravity
  Shoot	+	-
  Root	?	+

  

• 2)

  What is the other name for thigmonasty?

• 3)

  Give an example for negative hydrotropism.

• 4)

  Which gas is evolved during photosynthesis?

• 5)

  Give an example for micronutrients.

9th Standard English Medium Science Subject Plant Physiology Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Name the movement seen in Pneumatophores of Avicennia

• 2)

  Which flowering plant shows photonasty just opposite to that of Dandelion?

• 3)

  Fill in the blanks:
  6CO₂+________\(\overset { Sunlight }{ \underset { Chlorophyll }{ \longrightarrow } } \) _____ +6H₂O+6O₂ \(\uparrow\)

• 4)

  What is chlorophyll?

9th Standard English Medium Science Subject Animal Kingdom Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define taxonomy?

• 2)

  Why coelenterates are called diploblastic animals?

• 3)

  List the respiratory organs of amphibians.

• 4)

  Are Jelly fish and star fish similar to catfish? Give reasons.

• 5)

  What are the sub-phylum of prochordates?

9th Standard English Medium Science Subject Animal Kingdom Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What is a nematocyst?

• 2)

  Which organism is called as Friend of farmers? Why?

• 3)

  Differentiate between tube feet and false feet.

• 4)

  What is acrania?

• 5)

  Why are frogs said to be amphibians?

9th Standard English Medium Science Subject Nutrition and Health Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Differentiate : Kwashiorkar from Marasmus 

• 2)

  Differentiate: Macronutrients from micronutrients.

• 3)

  What is an adulterant?

• 4)

  Name any two naturally occuring toxic substances in food.

• 5)

  What factors are required for the absorption of Vitamin D from the food by the body?

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  On what factors does the electrostatic force between two charges depend?

• 2)

  Define electric field.

• 3)

  A bird sitting on a high power electric line is still safe. How?

• 4)

  Does a solar cell always maintain the potential across its terminals constant? Discuss.

• 5)

  Rubbing a comb on hair makes the comb get – 0.4C.
  (a) Find which material has lost electron and which one gained it.
  (b) Find how many electrons are transferred in this process.

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  On what factors does the electrostatic force between two charges depend?

• 2)

  Define electric field.

• 3)

  A bird sitting on a high power electric line is still safe. How?

• 4)

  Does a solar cell always maintain the potential across its terminals constant? Discuss.

• 5)

  Can electroplating be possible with alternating current?

9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  State Fleming’s Left Hand Rule.

• 2)

  Define magnetic flux density.

• 3)

  List the main parts of an electric motor.

• 4)

  Draw and label the diagram of an AC generator.

• 5)

  Differentiate step up and step down transformer.

9th Standard English Medium Science Subject Organization of Tissues Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Give two types of Sclerenchyma.

• 2)

  Name the components of xylem and phloem.

• 3)

  Name the tissue that connects muscle to bone in humans.

• 4)

  Name tissue that stores fat in our body.

• 5)

  Name the tissue present in the brain.

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  How is the small intestine designed to absorb digested food?

• 2)

  Why do we sweat?

• 3)

  State any two vital functions of human kidney.

• 4)

  How is it possible to control the urge to pass urine?

• 5)

  Write the names of male and female sex hormone.

9th Standard English Medium Science Subject Universe Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What is solar system?

• 2)

  What is a cosmic year?

• 3)

  Define orbital velocity.

• 4)

  Define time period of a satellite.

• 5)

  What is a satellite? What are the two types of satellites?

9th Standard English Medium Science Subject Economic Biology Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define Apiculture

• 2)

  Define Compost

• 3)

  Define Pinning

• 4)

  Differentiate Pollen and Nectar

9th Standard English Medium Science Subject World of Microbes Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define the following.
  1. Pathogen
  2. Bacteriophages
  3. Plasmid
  4. Vaccines
  5. Prions

9th Standard English Medium Science Subject Economic Biology Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define Floriculture

• 2)

  Define Pomiculture

9th Standard English Medium Science Subject Measurement Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Write the rules that are followed in writing the symbols of units in SI system.

• 2)

  Write the need of a standard unit.

• 3)

  Differentiate mass and weight.

• 4)

  What is the measuring unit of the thickness of a plastic carry bag?

• 5)

  How will you measure the least count of vernier caliper?

9th Standard English Medium Science Subject Motion Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define velocity?

• 2)

  What do you mean by uniform motion?

• 3)

  What do you understand about negative acceleration?

• 4)

  Is the uniform circular motion accelerated? Give reasons for your answer?

• 5)

  A bus travel, a distance of 20 km from Chennai central airport in 45 minutes. What is the average speed?

9th Standard English Medium Science Subject Motion Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What remains constant in uniform circular motion? And What Changes continuously in uniform circular motion?

• 2)

  What is meant by uniform circular motion? Give two examples of uniform circular motion.

• 3)

  Why did the actual speed differ from average speed?

• 4)

  The speed of a particle is constant. Will it have acceleration? Justify with an example.

• 5)

  A motorcycle travelling at 20ms^-1 has an acceleration of 4ms^-2. What does it explains about the velocity of the motorcycle.

9th Standard English Medium Science Subject Light Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  An object 2 cm high is placed at a distance of 16 cm from a concave mirror which produces a real image 3 cm high. Find the position of the image.

• 2)

  Pick out the concave and convex mirrors from the following and tabulate them Rear-view mirror, Dentist’s mirror, Torch-light mirror, Mirrors in shopping malls, Make-up mirror.

• 3)

  State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.

• 4)

  What is meant by magnification? Write its expression. What is its sign for the image and virtual image?

• 5)

  Write the spherical mirror formula and explain the meaning of each symbol used in it.

9th Standard English Medium Science Subject Matter around us Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Hold a ‘smiley ball’ and squeeze it. Can you compress it? Justify your answer?

• 2)

  Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

• 3)

  What is an adsorbate and adsorbent?

• 4)

  What is meant by Rf value?

• 5)

  Name the apparatus that you will use to separate the components of mixtures containing two,
  i. miscible liquids
  ii. immiscible liquids

9th Standard English Medium Science Subject Matter around us Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Why are gases easily compressible whereas solids are incompressible?

• 2)

  Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.

• 3)

  What is an adsorbate and adsorbent?

• 4)

  Differentiate between filtrate and distillate

• 5)

  How will you separate a mixture containing saw dust, naphthalene and iron filings?

9th Standard English Medium Science Subject Atomic Structure Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  An atom has 11 protons, 11 electrons and 12 neutrons. What is the atomic number and the name of the element?

• 2)

  State the law of multiple proportions

• 3)

  List the uses of isotopes?

• 4)

  What is isotone? Give an example.

• 5)

  Draw the structure of oxygen and sulphur atoms.

9th Standard English Medium Science Subject Animal Kingdom Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  How is the body wall of coelenterates arranged?

• 2)

  Outline the flow charts of Phylum Chordata.

• 3)

  Comment on the aquatic and terrestrial habits of amphibians.

• 4)

  On the basis of Position of notochord, classify the different Prochordates. Justify your answer.

• 5)

  List the integumentary glands of mammals.

9th Standard English Medium Science Subject Animal Kingdom Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  List the excretory organs of invertebrates in relation to their habitats.

• 2)

  Differentiate between flat worms and round worms?

• 3)

  List five characteristic features of fishes.

• 4)

  How is the reproductive characters of mammals different from those of Aves?

• 5)

  How are the limbs of the birds adapted for avian life?

9th Standard English Medium Science Subject Nutrition and Health Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Write any one function of the following minerals
  a) Calcium   b) Sodium
  c) Iron          d) Iodine

• 2)

  Explain any two methods of food preservation.

• 3)

  Sanjana wants to buy a jam bottle in a grocery shop. What are the things she should observe on the label before purchasing it

• 4)

  Give one reason for the following statements:
  a. Salt is added as a preservative in pickles___________
  b. We should not eat food items beyond the expiry date ______________
  c. Deficiency of calcium in diet leads to poor skeletal growth ___________

• 5)

  What are the effects of consuming adulterated food?

9th Standard English Medium Science Subject Heat Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What could be the final temperature of a mixture of 100 g of water at 90ºC and 600g of water at 20ºC?

9th Standard English Medium Science Subject Heat Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Ice is kept in a double-walled container. Why?

• 2)

  Differentiate convection and radiation

• 3)

  What is specific heat capacity?

• 4)

  Define specific latent heat capacity

• 5)

  A piece of aluminium of mass 0.5 kg is heated to 100ºC and then placed in 0.4 kg of water at 10ºC. If the resulting temperature of the mixture is 30ºC, what is the specific heat capacity of aluminium? (SHC of water = 4,200J/KgºC)

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  State Ohm’s law.

• 2)

  Name any two appliances which work under the principle of heating effect of current.

• 3)

  The values of current I flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?

  I (ampere)	0.5	1.0	2.0	3.0	4.0
  V (volt)	1.6	3.4	6.7	10.2	13.2

  [Hint: plot V-I graph and take slope]

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  On what factor does the resistance of a wire depend at a particular temperature?

• 2)

  Calculate the amount of charge that would flow in 2 hours through an element of an electric bulb drawing a current of 2.5A.

9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  State an important advantage of ac over dc.

• 2)

  A portable radio has a built in transformer so that if can work from the mains instead of batteries. Is this a step up or step down transformer?

• 3)

  State Faraday’s laws of electromagnetic induction.

9th Standard English Medium Science Subject Chemical Bonding Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Explain Octet rule with an example.

• 2)

  Find the odd one out.
  (i) H₂, Cl₂, NaCl, O₂, N₂
  (ii) H₂O₂, MnO₄^–, LiAlH₄, Cr₂O₇^2–

• 3)

  Identify the following reactions as oxidation or reduction
  a. Na \(\rightarrow\)Na⁺ + e^-.
  b. Fe³⁺ + 2e^-\(\rightarrow\) Fe⁺

• 4)

  An atom X with atomic number 20 combines with atom Y with atomic number 8. Draw the dot structure for the formation of the molecule XY.

• 5)

  Why are Noble gases inert in nature?

9th Standard English Medium Science Subject Chemical Bonding Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  NaCl₄ is insoluble in carbon tetrachloride but soluble in water. Give reason.

• 2)

  Write a note on different types on bonds?

• 3)

  Draw the electron distribution diagram for the formation of Carbon di oxide (CO₂) molecule.

• 4)

  Identify the compounds as Ionic/Covalent/Coordinate based on the given characteristics.
  a. Soluble in non polar solvents -
  b. undergoes faster/instantaneous reactions -
  c. Non conductors of electricity -
  d. Solids at room temperature -

• 5)

  Considering MgCl₂ as ionic compound and CH₄ as covalent compound give any two differences between these two compounds.

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Name any two metals which do not react with sodium hydroxide.

• 2)

  Give the significance of pH of soil in agriculture.

• 3)

  What are the uses of Plaster of Paris?

• 4)

  Define aquaregia.

• 5)

  What is neutralization reaction? Give an example.

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Write any four uses of acids.

• 2)

  What are the various uses of Aquaregia.

• 3)

  Two acids ‘A’ and ‘B’ are given. Acid A gives one hydrogen ion per molecule of the acid in solution. Acid B gives two hydrogen ions per molecule of the acid in solution.
  (i) Find out the acid A and acid B.
  (ii) Which acid is called the King of Chemicals?

• 4)

  Find the odd one out: Lemon juice, Tomato juice, House hold ammonia, Coffee

• 5)

  What is neutralization reaction? Give an example.

9th Standard English Medium Science Subject Organization of Tissues Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  How are collagen fibres organized in dense connective tissues

• 2)

  Which tissue is called middleman between tissue cells and blood? Why?

• 3)

  In which stage of mitosis the chromosomes align in an equatorial plate? How?

• 4)

  Why is blood considered to be a connective tissue?

• 5)

  Why is meiosis called reductional division and mitosis as equational division?

9th Standard English Medium Science Subject Organization of Tissues Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What is complex tissue? Name the various kinds of complex tissues.

• 2)

  Mention the most abundant muscular tissue found in our body. State its function.

• 3)

  What are the fibres present in the matrix of loose connective tissue?

• 4)

  What is skeletal connective tissue? How is it helpful in the functioning of our body?

• 5)

  Why should gametes be produced by meiosis during sexual reproduction?

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Name the types of teeth present in an adult human being. Mention the functions of each.

• 2)

  What are the end products of digestion of starch, proteins and fats respectively?

• 3)

  Explain the structure of nephron.

• 4)

  What are the functions of ovaries and uterus in female reproductive system?

• 5)

  Give reasons for the following:
  a. Scrotum remains outside the body of human males.
  b. The wall of the stomach is not digested by its own enzyme.

9th Standard English Medium Science Subject Fluids Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Why does a helium balloon float in air?

• 2)

  What is meant by atmospheric pressure?

• 3)

  A block of wood of weight 200 g floats on the surface of water. If the volume of block is 300 cm³ calculate the upthrust due to water.

• 4)

  A body of voloume 100 cc is immersed completely in water contained in a jar. The weight of water and the jar before immersion of the body was 700 g. Calculate the weight of water and jar after immersion.

• 5)

  Calculate the apparent weight of wood floating on water if it weighs 100g in air.

9th Standard English Medium Science Subject Fluids Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  On what factors the pressure exerted by the liquid depends on?

• 2)

  Why it is easy to swim in river water than in sea water?

• 3)

  State Pascal’s law.

• 4)

  Density of mercury is 13600 kg m^–3. Calculate the relative density.

• 5)

  The density of water is 1g cm^–3. What is its density in S.I. units?

9th Standard English Medium Science Subject Sound Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Through which medium sound travels faster, iron or water? Give reason.

• 2)

  Can sound travel through vacuum?

• 3)

  What is meant by supersonic speed?

• 4)

  You and your friend are on the moon. Will you be able to hear any sound produced by your friend?

• 5)

  A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard?
  (Given g = 10 m s^–2 and speed of sound = 340 m s^–1)

9th Standard English Medium Science Subject Measurement Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Choose the correct one

• 2)

  Rulers, measuring tapes and metre scales are used to measure

• 3)

  1 metric ton is equal to

• 4)

  Distance between Chennai and Kanyakumari can be found in

• 5)

  Which among the following is not a device to measure mass?

9th Standard English Medium Science Subject Sound Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Name the device which is used to produce sound in laboratory experiments.

• 2)

  What should an object do to produce sound?

• 3)

  Name the physical quantity whose SI unit is ‘hertz’. Define.

• 4)

  How does the sound produced by a vibrating object in a medium reach your ears?

• 5)

  The frequency of a source of sound is 600 Hz. Calculate the number of times it
  vibrates in a minute?

9th Standard English Medium Science Subject Universe Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Write a note on the inner planets

• 2)

  Write about comets.

• 3)

  State Kepler’s laws.

• 4)

  Write short notes on Gaganyaan

• 5)

  What factors have made life on Earth possible?

9th Standard English Medium Science Subject Motion Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  A car is being driven at a speed of 20 ms^-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

• 2)

  Which one of the following is most likely not a case of uniform circular motion?

• 3)

  The centrifugal force is

• 4)

  When a body starts from rest, the acceleration of the body after 2 second in _____________ of its displacement.

• 5)

  Force involved in uniform circular motion is given by _____________.

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Differentiate graphite and diamond.

• 2)

  What are saturated and unsaturated compounds called?

• 3)

  Carbon do not form ionic compounds. Why?

• 4)

  What is the valency of carbon in carbon monoxide?

• 5)

  Why are one-time use and throwaway plastics harmful?

9th Standard English Medium Science Subject Motion Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The area under velocity – time graph represents the

• 2)

  Unit of acceleration is

• 3)

  The force responsible for drying of clothes in a washing machine is

• 4)

  The area under velocity time graph represents

• 5)

  In a 100 m race, the winner takes 10 s to reach the finishing point. The average speed of the winner is ___________ ms^-1.

9th Standard English Medium Science Subject Light Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The field of view is maximum for ________ 

• 2)

  _________ is used as reflectors in torchlight.

• 3)

  The focal length of a concave mirror is 5cm. Its radius of curvature is

• 4)

  The speed of light is maximum in

• 5)

  Which of the following statements about total internal reflection is true?

9th Standard English Medium Science Subject Light Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is

• 2)

  When the reflecting surface is curved outwards the mirror formed will be

• 3)

  The focal length of a concave mirror is 5cm. Its radius of curvature is

• 4)

  When a beam of white light passes through a prism it gets

• 5)

  A real and enlarged image can be obtained by using a

9th Standard English Medium Science Subject Environmental Science Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  How do human activities affect nitrogen cycle?

• 2)

  What are the challenges faced by hydrophytes in their habitat?

• 3)

  Why is it important to conserve water?

• 4)

  What is grey water?

• 5)

  What is IUCN? What is the vision of IUCN?

9th Standard English Medium Science Subject Matter around us Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Among the following______is a mixture

• 2)

  The constituents that form a mixture are also called

• 3)

  Difference in ________________is the principle used in fractional distillation

• 4)

  ______ is essential to perform separation by solvent extraction method.

• 5)

  For a simple distillation process we need to have

9th Standard English Medium Science Subject Environmental Science Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  According to you, which process of water cycle is adversely affected by human activities?

• 2)

  What is adaptation?

• 3)

  List some of the ways in which you could save water in your home and school?

• 4)

  What is grey water?

• 5)

  What are the uses of recycled water?

9th Standard English Medium Science Subject Matter around us Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The physical state of water at 373 K is

• 2)

  When we mix a drop of ink in water we get a__________

• 3)

  __________ has the same properties throughout the sample

• 4)

  The separation of denser particles from lighter particles done by rotation at high speed is called ________

• 5)

  Filtration method is effective in separating _______ mixture

9th Standard English Medium Science Subject Economic Biology Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What do you know about AYUSH?

• 2)

  Mention any two mushroom preservation methods.

• 3)

  How is division of labour observed in honey bees?

• 4)

  Enumerate the advantages of vermicompost over chemical fertiliser.

• 5)

  List the medicinal importance of honey.

9th Standard English Medium Science Subject Atomic Structure Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Among the following the odd pair is

• 2)

  Change in the number of neutrons in an atom changes it to

• 3)

  The term nucleons refer to

• 4)

  The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

• 5)

  The correct electronic configuration of potassium is

9th Standard English Medium Science Subject Economic Biology Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What are secondary metabolites?

• 2)

  What are the types of vegetable garden?

• 3)

  Why do we call Haryana and Kankrej breed of cattle as dual purpose breeds?

• 4)

  What is the nutritional importance of fish liver oils? Name any two marine fishes which yield these oils.

• 5)

  What are the species of earthworm used for vermiculture?

9th Standard English Medium Science Subject Plant Physiology Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Transpiration is best defined as _________ 

• 2)

  A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ____________.

• 3)

  The plant part which exhibits negative geotropism is __________.

• 4)

  Dandelion flowers open the petals in bright light during the day time but close the petals in dark at night. This response of Dandelion flowers is called ___________.

• 5)

  Chlorophyll in a leaf is required for __________.

9th Standard English Medium Science Subject Plant Physiology Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The bending of root of a plant in response to water is called _________ 

• 2)

  The root of the plant is __________.
  i) positively phototropic but negatively geotropic
  ii) positively geotropic but negatively phototropic
  iii) negatively phototropic but positively hydrotropic
  iv)negatively hydrotropic but positively phototropic

• 3)

  The non-directional movement of a plant part in response to temperature is called ________.

• 4)

  During photosynthesis plants exhale _______. 

• 5)

  A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to _______.

9th Standard English Medium Science Subject World of Microbes Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Distinguish between Virion and Viroid.

• 2)

  A baby is suffering from diarrhoea, while other babies in the same locality do not. Mention the possible causes that you think. What would be the possible solutions for this?

• 3)

  Name the vector of the malarial parasite. Mention the species of malarial parasite which cause malignant and fatal malaria.

• 4)

  What is triple antigen? Mention the disease which can be prevented by using the antigen.

• 5)

  Sanjay had an attack of chicken pox and has just recovered. The health officer of his locality says that the disease would not occur again for him. What would be the reason for this?

9th Standard English Medium Science Subject Animal Kingdom Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Choose the correct terms related for Hemichordate

• 2)

  Poikilothermic organisms are

• 3)

  Excretory organ of tape worm is

• 4)

  During ecdysis which of the following is shed off

• 5)

  Find the correct sequence

9th Standard English Medium Science Subject Measurement Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The main scale reading while measuring the thickness of a rubber ball using Vernier caliper is 7 cm and the Vernier scale coincidence is 6. Find the radius of the ball.

• 2)

  Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.

• 3)

  Find the mass of an object weighing 98 N.

• 4)

  How will you find the thickness of a one rupee coin?

• 5)

  Calculate the positive and negative error from the given figure
  

9th Standard English Medium Science Subject Measurement Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 10¹⁵ m and Ezhilan argues that it is 9.46 × 10¹² km. Who is right? Justify your answer.

• 2)

  Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.

• 3)

  Explain a method to find the thickness of a hollow tea cup.

• 4)

  Find out any ‘ten words’ related to measurement from the grid
  

• 5)

  Calculate the diameter of the sphere which is shown in the Figure. Assume the scale has no zero error.
  
   

9th Standard English Medium Science Subject Animal Kingdom Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which is not an insect?

• 2)

  Mesoglea is present in

• 3)

  Which one of the following pairs is not a poikilothermic animal?

• 4)

  Which is not a feature of chordates

• 5)

  The animal without skull is

9th Standard English Medium Science Subject Motion Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  During an experiment, a signal from a spaceship reached the ground station in five seconds. What was the distance of the spaceship from the ground station? The signal travels at the speed of light that is 3 × 10⁸ ms^-1?

• 2)

  An Athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 m and 20 s?

• 3)

  A train travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of ‒0.5 ms^-2. Find how far the train will go before it is brought to rest?

• 4)

  The following graph shows the motion of a car. What do you infer from the graph along OA and AB? What is the speed of the car along AB and what time it reached this speed.
  

9th Standard English Medium Science Subject Motion Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms^-2 with what velocity will it strike the ground? After what time will it strike the ground?

• 2)

  A racing car has a uniform acceleration of 4 ms^-2. What distance it covers in 10 s after start?

• 3)

  The adjacent diagram shows the velocity-time graph of a body. During what time interval is the motion of the body accelerated. Find the acceleration in the time interval mentioned in part 'a'. What is the distance travelled by the body in the time interval mentioned in part a?

• 4)

  From the following Table, check the shape of the graph.

  Time (s)	0	2	4	6	8	10	12
  Velocity(ms-1)	0	20	40	40	40	20	0

9th Standard English Medium Science Subject Nutrition and Health Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The nutrient required in trace amounts to accomplish various body functions is ____________.

• 2)

  The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

• 3)

  The sprouting of onion and potatoes can be delayed by the process of _______________

• 4)

  Food and Adulteration Act was enforced by Government of India in the year __________.

• 5)

  An internal factor responsible for spoilage of food is ___________.

9th Standard English Medium Science Subject Light Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  A car is fitted with a convex mirror of focal length 20 cm. Another car is 6 m away from the first car.
  a) Find the position of the second car as seen in the mirror of the first
  b) What is the size of the image if the second car is 2 m broad and 1.6 m high?
  Focal length = 20 cm (convex mirror)
  Object distance = -6m
   = -600 cm
  Image distance v =?
  Calculation for position of image using mirror equation

• 2)

  Explain with diagrams how refraction of incident light takes place from
  a) rarer to denser medium
  b) denser to rarer medium
  c) normal to the surface separating the two media.

• 3)

  Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and Principal focus and state three characteristics of the image.

• 4)

  An object of height 2 cm is placed at a distance 20 cm in front of a concave mirror of focal length 12 cm. Find the position, size and nature of the image.

• 5)

  Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Speed of light in vacuum is 3 × 10⁸ ms^-1).

9th Standard English Medium Science Subject Heat Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Calorie is the unit of

• 2)

  The specific heat capacity of water is

• 3)

  Two cylindrical rods of same length have the area of cross section in the ratio 2:1. If both the rods are made up of same material, which of them conduct heat faster?

• 4)

  Two cylinders of equal height and radius are made of copper and aluminium. Which of them conducts heat faster?

• 5)

  A device in which the loss of heat due to conduction, convection and radiation is minimized in

9th Standard English Medium Science Subject Light Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is i) at C ii) between C and F iii) between F and P of the mirror.
  b) Mention in the diagram the position and nature of image in each case.

• 2)

  State and verify laws of refraction using a glass slab.

• 3)

  The radius of curvature of a convex mirror is 40 cm. Find its focal length  

• 4)

  A concave mirror produces three times magnified real image of an object placed at 7 cm in front of it. Where is the image located?

• 5)

  The speed of light in water is 2.25 × 10⁸ ms^-1. If the speed of light in vacuum is 3 × 10⁸ ms^-1, calculate the refractive index of water. 

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Rubbing of comb with hair.

• 2)

  Potential near a charge is the measure of its________ to bring a positive charge at that point.

• 3)

  Heating effect of current is called,

• 4)

  Electroplating is an example for

• 5)

  In India the frequency of alternating current is

9th Standard English Medium Science Subject Atomic Structure Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What conclusions were made from the observations of Gold foil experiment?

• 2)

  Explain the postulates of Bohr’s atomic model.

• 3)

  State the Gay Lussac’s law of combining volumes, explain with an illustration.

• 4)

  Calculate the volume of oxygen required for the complete combustion of 20 cm³ of methane[CH_4(g) +2O_2⟶ CO_2(g) +2H₂O_(g)]

• 5)

  Calculate the mass of a proton, given its charge = + 1.60 \(\times\)10⁻¹⁹ C charge / mass = 9.58 \(\times\) 10⁷ C kg^-1

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  In current electricity, a positive charge refers to,

• 2)

  Electric field lines________ from positive charge and__________ in negative charge.

• 3)

  In an electrolyte the current is due to the flow of

• 4)

  The following is not a safety device.

• 5)

  Resistance of a wire depends on

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Draw a circuit with a 2\(\Omega\) and 5\(\Omega\) resistors in series. Connect another 3\(\Omega\) resistor parallel to the above connection.

• 2)

  How are the home appliances connected in general, in series or parallel. Give reasons.

• 3)

  List the safety features while handling with electricity.

• 4)

  Find the value of current in the circuit.
  

• 5)

  A wire of resistance 10 \(\Omega\) is bent in the form of a circle. Find the effective resistance between the points A and B which lies on the diameter.

9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which of the following converts electrical energy into mechanical energy?

• 2)

  An electric generator converts

• 3)

  The part of the AC generator that passes the current from the armature coil to the external circuit is

• 4)

  Transformer works on.

• 5)

  The unit of magnetic flux density is

9th Standard English Medium Science Subject Chemical Bonding Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  List down the differences between Ionic and Covalent compounds.

• 2)

  Give an example for each of the following statements.
  a. A compound in which two Covalent bonds are formed
  b. A compound in which one ionic bond is formed
  c. A compound in which two Covalent and one Coordinate bonds are formed
  d. A compound in which three covalent bonds are formed
  e. A compound in which Coordinate bond is formed

• 3)

  Identify the incorrect statement and correct them.
  a. Like covalent compounds, Coordinate compounds also contain charged particles (ions), so they are good conductors of electricity.
  b. Ionic bond is a weak bond when compared to Hydrogen bond.
  c. Ionic or electrovalent bonds are formed by mutual sharing of electrons between atoms.
  d. Loss of electrons is called Oxidation and Gain of electron is called Reduction.
  e.The electrons which are not involved in bonding are called valence electrons.

• 4)

  Discuss in brief about the properties of Coordinate covalent compounds.

• 5)

  Find the oxidation number of the elements in the following compounds.
  a. C in CO₂
  b. Mn in MnSO₄
  c. N in HNO₃

9th Standard English Medium Science Subject Periodic Classification of Elements Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  If Dobereiner is related with 'law of triads', then Newlands is related with __________.

• 2)

  Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

• 3)

  Elements in the modern periodic table are arranged in__________ groups and __________ periods.

• 4)

  The increasing order of the energy of subshells is

• 5)

  If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p¹, then it will occupy___________ block of the periodic table.

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Why does distilled water not conduct electricity whereas rain water does?

• 2)

  Plaster of Paris should be stored in a moisture proof container. why?

• 3)

  Write any four uses of bases.

• 4)

  Write any five uses of salts.

• 5)

  Sulphuric acid is called King of Chemicals. Why is it called so?

9th Standard English Medium Science Subject Chemical Bonding Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Sodium having atomic number 11, is ready to_______________electron/electrons to attain the nearest noble gas electronic configuration.

• 2)

  The element that would form anion by gaining electrons in a chemical reaction is ___________.

• 3)

  ____________compounds have high melting and boiling points.

• 4)

  Oxidising agents are also called as____________because they remove electrons form other substances.

• 5)

  The property which is characteristics of an Ionic compound is that

9th Standard English Medium Science Subject Organization of Tissues Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What are permanent tissues? Describe the different types of simple permanent tissue.

• 2)

  Write about the elements of Xylem.

• 3)

  Give one reason for the following
  a. Blood is fluid connective tissue
  b. Skeletal muscles contain contractile proteins
  c. Heart muscles are involuntary in nature

• 4)

  Which are not true cells in the blood? Why?

• 5)

  You are now familiarised with various plant and animal tissues. Point out any five differences between these tissues.

9th Standard English Medium Science Subject Chemical Bonding Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Number of valence electrons in carbon is

• 2)

  Atoms having 1, 2 or 3 electrons in its valence shell will readily form_____________

• 3)

  Bond formed between a metal and non-metal atom is usually____________

• 4)

  Covalent bond is formed by_________

• 5)

  Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

9th Standard English Medium Science Subject Organization of Tissues Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What are meristems? Describe the distribution and functions of various types of meristems.

• 2)

  List out the differences between mitosis and meiosis.

• 3)

  What is the consequence that occur if all blood platelets are removed from the blood?

• 4)

  Which are not true cells in the blood? Why?

• 5)

  If cell (A) has undergone one mitotic division and another cell (B) has completed its meiotic division. The number of cells produced in A and B would be
  Cell A:                       Cell B :

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Zn + 2HCl \(\longrightarrow \) ZnCl₂ + ____\(​​​​\uparrow \)(H_2' O_2' CO₂)

• 2)

  Acids in plants and animals are organic acids. Whereas acids in rocks and minerals are_________

• 3)

  Since metal carbonate and metal bicarbonate are basic they react with acids to give salt and water with the liberation of__________

• 4)

  The nature of the tooth paste commonly used is in nature

• 5)

  The hydrated salt of copper sulphate has______colour

9th Standard English Medium Science Subject Fluids Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Describe the construction and working of mercury barometer.

• 2)

  Explain the construction and working of a hydrometer with diagram.

• 3)

  How high does the mercury barometer stand on a day when atmospheric pressure is 98.6 kPa?

• 4)

  If you put one ice cube in a glass of water and another in a glass of alcohol, what would you observe? Explain your observations.

• 5)

  Why does a boat with a hole in the bottom would eventually sink?

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Apple contains malic acid. Orange contains_______

• 2)

  Acids turn blue litmus paper to_______

• 3)

  Since metal carbonate and metal bicarbonate are basic they react with acids to give salt and water with the liberation of__________

• 4)

  pH value of human blood is_________

• 5)

  You are given pure water to test the pH value using pH paper. It shows colour

9th Standard English Medium Science Subject Fluids Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  With an appropriate illustration prove that the force acting on a smaller area exerts a greater pressure.

• 2)

  How does an object’s density determine whether the object will sink or float in water?

• 3)

  State the laws of flotation.

• 4)

  How does a fish manage to rise up and move down in water?

• 5)

  You have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. In reality, one is heavier than other. Can you say which one is heavier and why?

9th Standard English Medium Science Subject Organization of Tissues Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Companion cells are closely associated with

• 2)

  Aerenchyma is found in

• 3)

  Unstriated muscles are found in

• 4)

  Long, unbranched multinucleated cells are

• 5)

  Brush bordered epithelium is found in

9th Standard English Medium Science Subject Sound Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Describe with diagram, how compressions and rarefactions are produced.

• 2)

  Verify experimentally the laws reflection of sound.

• 3)

  List the applications of sound.

• 4)

  Explain how does SONAR work?

• 5)

  Explain the working of human ear with diagram.

9th Standard English Medium Science Subject Organization of Tissues Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which of the following is not found in a neuron?

• 2)

  White fibres of connective tissue are made up of

• 3)

  Smooth muscles occur in

• 4)

  Nerve cell does not contains

• 5)

  In a certain type of cell division the diploid number of chromosome is reduced to half. This kind of division occurs in

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What is catenation? How does carbon form catenated compounds?

• 2)

  What are the chemical reactions of carbon? 

• 3)

  Name the three safer resin codes of plastics and describe their features.

• 4)

  Why do carbon exist mostly in combined state?

• 5)

  When a carbon fuel burns in less aerated room, it is dangerous to stay there. Why?

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which of the following is not a salivary gland?

• 2)

  To prevent the entry of food into the trachea, the opening is guarded by__________

• 3)

  Excretion means______

• 4)

  Which one of the following substance is not a constituent of sweat?

• 5)

  Which of the following is not a part of female reproductive system?

9th Standard English Medium Science Subject Applied Chemistry Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Draw the cell diagram of Daniel cell. Give its reactions.

• 2)

  Explain the types of dyes based on their method of application.

• 3)

  Name various food additives and explain their functions.

• 4)

  Sudha met with a fire accident. What kind of drug(s), she must take?

• 5)

  The soil pH of a crop land is 5. What kind of fertilizers should be used in that land?

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Stomach of human beings mainly digests

• 2)

  Bile helps in the digestion of________

• 3)

  Excretion means______

• 4)

  The structural and functional unit of the kidney is__________

• 5)

  The common passage meant for transporting urine and sperms in male is___________

9th Standard English Medium Science Subject Environmental Science Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Describe the processes involved in the water cycle.

• 2)

  Explain carbon cycle with the help of a flow chart?

• 3)

  What are the conditions in a dry habitat to which plants develop adaptations? List out the adaptations of xerophytes?

• 4)

  How does a bat adapt itself to its habitat?

• 5)

  What is water recycling? Explain the conventional wastewater recycling treatment methods?

9th Standard English Medium Science Subject Parts of Computer Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which one of the following is an output device?

• 2)

  Name the cable that connects CPU to the monitor.

• 3)

  Which one of the following is an input device?

• 4)

  Which one of the following is an example for wireless connections?

• 5)

  Pen drive is _______device.

9th Standard English Medium Science Subject Economic Biology Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Give an account on medicinal plants.

• 2)

  What are biofertilisers? Give examples. Why are biofertilisers better than other fertilizers.

• 3)

  Define Mushroom culture. Explain the mushroom cultivation methods.

• 4)

  What are the sources of organic resources for vermicomposting?

• 5)

  Explain the feeding management of dairy cattle.

9th Standard English Medium Science Subject Sound Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  If the speed of a wave is 340 m s^-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

• 2)

  The maximum speed of vibrations which produces audible sound will be in

• 3)

  The sound waves travel faster

• 4)

  The speeds of sound in four different media are given below. Which of the following is the most likely speed in ms^-1 with which the two underwater whales in a sea can talk to each other when separated by a large distance?

• 5)

  The velocities of sound waves in four media P, O, Q, R and S are 18,00 km/h, 900 km/h, 0 km/h, and 1200 km/h respectively. Which could be a liquid medium?

9th Standard English Medium Science Subject Economic Biology Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Enumerate the advantage of hydroponics.

• 2)

  What are biofertilisers? Give examples. Why are biofertilisers better than other fertilizers.

• 3)

  Write short notes on;
  a) Importance of green houses
  b) Uzahavan mobile Application
  c) Major floriculture zones
  d) Azospirillum

• 4)

  Give an account of different types of fish ponds used for rearing fishes.

• 5)

  Classify the different breeds of the cattle with suitable examples.

9th Standard English Medium Science Subject Sound Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through

• 2)

  Which of the following statement best describes frequency?

• 3)

  In the sound wave produced by a vibrating turning fork as shown in the diagram, half the wave length is represented by:
  

• 4)

  When the pitch of note by a harmonium is lowered, then the wave length of the note

• 5)

  Which of the following can produce longitudinal waves as well as transverse waves under different conditions?

9th Standard English Medium Science Subject World of Microbes Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Give an account of classification of bacteria based on the shape.

• 2)

  Describe the role of microbes in agriculture and industries.

• 3)

  Explain the various types of viruses with examples.

• 4)

  Suggest the immunization schedule for a new born baby till 12 months of age. Why it is necessary to follow the schedule?

• 5)

  Name the causative agent of typhoid in human. How does the pathogen gain entry into the human body? Write the diagnostic symptoms and mention the organ that is affected in severe cases.

9th Standard English Medium Science Subject Universe Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which of the following statements is correct?
  A. There are eight planets in our Solar System.
  B. Except Mars, all other planets revolve around the Sun in elliptical orbits

• 2)

  Who proposed the heliocentric model of the universe?

• 3)

  Which of the following is not a part of outer solar system?

• 4)

  Ceres is a _______.

• 5)

  The period of revolution of planet A around the Sun is 8 times that of planet B. How many times is the distance of planet A as great as that of planet B?

9th Standard English Medium Science Subject Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Rulers, measuring tapes and metre scales are used to measure

• 2)

  Slope of the velocity - time graph gives

• 3)

  _________ is used as reflectors in torchlight.

• 4)

  The constituents that form a mixture are also called

• 5)

  Change in the number of neutrons in an atom changes it to

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which of the following is highly toxic?

• 2)

  Plastics made of Polycarbonate (PC) and Acrylonitrile Butadiene Styrene (ABS) are made of resin code ___________

• 3)

  Graphite is used as lubricant in machines because

• 4)

  Graphene is one atom thick layer of carbon obtained from

• 5)

  The legal measures to prevent plastic pollution come under the ___________ Protection Act 1988.

9th Standard English Medium Science Subject Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The part of the AC generator that passes the current from the armature coil to the external circuit is

• 2)

  Elements in the modern periodic table are arranged in__________ groups and __________ periods.

• 3)

  Covalent bond is formed by_________

• 4)

  The nature of the tooth paste commonly used is in nature

• 5)

  Nerve cell does not contains

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which of the following does not contain double bond

• 2)

  Raagav brings his lunch every day to school in a plastic container which has resin code number 5. The container is made of

• 3)

  Which of the following plastic items are banned by the Government of Tamil Nadu as of 1st January 2019?

• 4)

  The lead pencil contains

• 5)

  Plastic resin codes are shown as three chasing arrows in a ______________ with a number in the middle or letters (an acronym of that plastic type).

9th Standard English Medium Science Subject Book Back 2 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Define standard unit.

• 2)

  Light travels from a rarer medium to a denser medium. The angles of incidence and refraction are respectively 45^o and 30^o. Calculate the refractive index of the second medium with respect to the first medium.
  Angle of incidence i = 45^o
  Angle of refraction r = 30^o

• 3)

  How gaseous pressure arises?

• 4)

  Compare the charge and mass of protons and electrons.

• 5)

  Write the scientific terms used to represent the following:
  a) Growing of roots towards the gravity.
  b) Bending of roots towards the water.

9th Standard English Medium Science Subject Applied Chemistry Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The antibiotic Penicillin is obtained from ___________ 

• 2)

  The cathode of an electrochemical reaction involves ____________

• 3)

  Which of the following does not contain natural dyes?

• 4)

  Radiochemistry deals with

• 5)

  Chlorinated hydrocarbons are used as

9th Standard English Medium Science Subject Book Back 2 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Convert: 300 K into Celsius scale,

• 2)

  Why does a ray of light bend when it travels from one medium to another?

• 3)

  What is meant by desalination of sea water?

• 4)

  Arrange the following in the increasing order of atomic number
  Calcium, Silicon, Boron, Magnesium, Oxygen, Helium, Neon, Sulphur, Fluorine and Sodium

• 5)

  What is chlorophyll?

9th Standard English Medium Science Subject Applied Chemistry Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  One Nanometre is

• 2)

  1% solution of Iodoform is used as

• 3)

  The age of a dead animal can be determined by using an isotope of ____________

• 4)

  This type of food protect us from deficiency diseases.

• 5)

  The groups responsible for the colour of an organic compound is called

9th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What is the measuring unit of the thickness of a plastic carry bag?

• 2)

  A 900 kg car moving at 10 ms^-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

• 3)

  State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.

• 4)

  Differentiate between filtrate and distillate

• 5)

  What is isotone? Give an example.

9th Standard English Medium Science Subject Environmental Science Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The ice sheets from the north and south poles and the icecaps on the mountains, get converted into water vapour through the process of ______________.

• 2)

  The atmospheric carbon dioxide enters into the plants through the process of ______________.

• 3)

  Which of the following is not an adaptation of hydrophytes?

• 4)

  Identify the incorrect statement with respect to adaptations of earthworm.

• 5)

  Specific constituents such as nitrogen, phosphorus, suspended solids and heavy metals found in the wastewater are removed during ___________ treatment of water recycling process.

9th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Write the need of a standard unit.

• 2)

  A 900 kg car moving at 10 ms^-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

• 3)

  What is an adsorbate and adsorbent?

• 4)

  State the law of multiple proportions

• 5)

  Outline the flow charts of Phylum Chordata.

9th Standard English Medium Science Subject Environmental Science Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  All the factors of biosphere which affect the ability of organisms to survive and reproduce are called as _______________.

• 2)

  Free living soil bacteria such as Pseudomonas sp are responsible for the ______________ process in the nitrogen cycle.

• 3)

  Increased amount of ___________ in the atmosphere, results in greenhouse effect and global warming

• 4)

  In some xerophytes, leaves are modified into spines as an adaptation ________________.

• 5)

  Which of the following is one of the strategies to conserve water?

9th Standard English Medium Science Subject Book Back 5 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  How will you find the thickness of a one rupee coin?

• 2)

  A train travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of ‒0.5 ms^-2. Find how far the train will go before it is brought to rest?

• 3)

  A car is fitted with a convex mirror of focal length 20 cm. Another car is 6 m away from the first car.
  a) Find the position of the second car as seen in the mirror of the first
  b) What is the size of the image if the second car is 2 m broad and 1.6 m high?
  Focal length = 20 cm (convex mirror)
  Object distance = -6m
   = -600 cm
  Image distance v =?
  Calculation for position of image using mirror equation

• 4)

  Explain Tyndall effect and Brownian movement with suitable diagram.

• 5)

  What conclusions were made from the observations of Gold foil experiment?

9th Standard English Medium Science Subject Economic Biology Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Drones in the honey bee colony are formed from

• 2)

  Which one of the following is refered as red worms?

• 3)

  Mehsana is a breed of

• 4)

  __________ is the method of growing plants without soil.

• 5)

  The plant body of mushroom is

9th Standard English Medium Science Subject Book Back 5 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  What are the changes of state in water? Explain.

• 2)

  List the safety features while handling with electricity.

• 3)

  Explain two types of transformer.

• 4)

  Discuss in brief about the properties of Coordinate covalent compounds.

9th Standard English Medium Science Subject Economic Biology Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Which one of the following is not an exotic breed of cow?

• 2)

  Which of the following are Indian cattle?
  i. Bos indicus
  ii. Bos domesticus
  iii. Bos bubalis
  iv. Bos vulgaris

• 3)

  Drones in the honey bee colony are formed from

• 4)

  Which one of the following is refered as red worms?

• 5)

  Mehsana is a breed of

9th Standard English Medium Science Subject World of Microbes Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Mosquito borne viral diseases are

• 2)

  Which one of the following is a pair of viral disease?

• 3)

  The primary organ infected during tuberculosis is

• 4)

  The organ affected by jaundice is

• 5)

  Poliomyelitis virus which causes infantile paralysis enters the body through

9th Standard English Medium Science Subject World of Microbes Book Back 1 Mark Questions with Solution Part - II updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  The major constituent of vinegar is

• 2)

  Which of the following is transmitted through air?

• 3)

  One of the means of indirect transmission of a disease is

• 4)

  Mosquito borne viral diseases are

• 5)

  Which one of the following is a pair of viral disease?

9th Standard English Medium Science Subject Hardware and Software Book Back 1 Mark Questions with Solution Part - I updated Book back Questions - by Question Bank Software - May 13, 2022 - View & Read

• 1)

  Find out the part that is not found in CPU?

• 2)

  Which of the following is correct?

• 3)

  LINUX is a

• 4)

  Find out the Paid and Proprietary software from the given list

• 5)

  _________is an Operating System.

9th Standard English Medium Science Subject Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What are the changes of state in water? Explain.

• 2)

  List the safety features while handling with electricity.

• 3)

  Explain two types of transformer.

• 4)

  Discuss in brief about the properties of Coordinate covalent compounds.

9th Standard English Medium Science Subject Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  How will you find the thickness of a one rupee coin?

• 2)

  A train travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of ‒0.5 ms^-2. Find how far the train will go before it is brought to rest?

• 3)

  A car is fitted with a convex mirror of focal length 20 cm. Another car is 6 m away from the first car.
  a) Find the position of the second car as seen in the mirror of the first
  b) What is the size of the image if the second car is 2 m broad and 1.6 m high?
  Focal length = 20 cm (convex mirror)
  Object distance = -6m
   = -600 cm
  Image distance v =?
  Calculation for position of image using mirror equation

• 4)

  Explain Tyndall effect and Brownian movement with suitable diagram.

• 5)

  What conclusions were made from the observations of Gold foil experiment?

9th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Write the need of a standard unit.

• 2)

  A 900 kg car moving at 10 ms^-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

• 3)

  What is an adsorbate and adsorbent?

• 4)

  State the law of multiple proportions

• 5)

  Outline the flow charts of Phylum Chordata.

9th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What is the measuring unit of the thickness of a plastic carry bag?

• 2)

  A 900 kg car moving at 10 ms^-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

• 3)

  State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.

• 4)

  Differentiate between filtrate and distillate

• 5)

  What is isotone? Give an example.

9th Standard English Medium Science Subject Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Convert: 300 K into Celsius scale,

• 2)

  Why does a ray of light bend when it travels from one medium to another?

• 3)

  What is meant by desalination of sea water?

• 4)

  Arrange the following in the increasing order of atomic number
  Calcium, Silicon, Boron, Magnesium, Oxygen, Helium, Neon, Sulphur, Fluorine and Sodium

• 5)

  What is chlorophyll?

9th Standard English Medium Science Subject Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define standard unit.

• 2)

  Light travels from a rarer medium to a denser medium. The angles of incidence and refraction are respectively 45^o and 30^o. Calculate the refractive index of the second medium with respect to the first medium.
  Angle of incidence i = 45^o
  Angle of refraction r = 30^o

• 3)

  How gaseous pressure arises?

• 4)

  Compare the charge and mass of protons and electrons.

• 5)

  Write the scientific terms used to represent the following:
  a) Growing of roots towards the gravity.
  b) Bending of roots towards the water.

9th Standard English Medium Science Subject Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  The part of the AC generator that passes the current from the armature coil to the external circuit is

• 2)

  Elements in the modern periodic table are arranged in__________ groups and __________ periods.

• 3)

  Covalent bond is formed by_________

• 4)

  The nature of the tooth paste commonly used is in nature

• 5)

  Nerve cell does not contains

9th Standard English Medium Science Subject Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Rulers, measuring tapes and metre scales are used to measure

• 2)

  Slope of the velocity - time graph gives

• 3)

  _________ is used as reflectors in torchlight.

• 4)

  The constituents that form a mixture are also called

• 5)

  Change in the number of neutrons in an atom changes it to

9th Standard English Medium Science Subject World of Microbes Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Give an account of classification of bacteria based on the shape.

• 2)

  Describe the role of microbes in agriculture and industries.

• 3)

  Explain the various types of viruses with examples.

• 4)

  Suggest the immunization schedule for a new born baby till 12 months of age. Why it is necessary to follow the schedule?

• 5)

  Name the causative agent of typhoid in human. How does the pathogen gain entry into the human body? Write the diagnostic symptoms and mention the organ that is affected in severe cases.

9th Standard English Medium Science Subject Economic Biology Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Enumerate the advantage of hydroponics.

• 2)

  What are biofertilisers? Give examples. Why are biofertilisers better than other fertilizers.

• 3)

  Write short notes on;
  a) Importance of green houses
  b) Uzahavan mobile Application
  c) Major floriculture zones
  d) Azospirillum

• 4)

  Give an account of different types of fish ponds used for rearing fishes.

• 5)

  Classify the different breeds of the cattle with suitable examples.

9th Standard English Medium Science Subject Economic Biology Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Give an account on medicinal plants.

• 2)

  What are biofertilisers? Give examples. Why are biofertilisers better than other fertilizers.

• 3)

  Define Mushroom culture. Explain the mushroom cultivation methods.

• 4)

  What are the sources of organic resources for vermicomposting?

• 5)

  Explain the feeding management of dairy cattle.

9th Standard English Medium Science Subject Environmental Science Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Describe the processes involved in the water cycle.

• 2)

  Explain carbon cycle with the help of a flow chart?

• 3)

  What are the conditions in a dry habitat to which plants develop adaptations? List out the adaptations of xerophytes?

• 4)

  How does a bat adapt itself to its habitat?

• 5)

  What is water recycling? Explain the conventional wastewater recycling treatment methods?

9th Standard English Medium Science Subject Applied Chemistry Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Draw the cell diagram of Daniel cell. Give its reactions.

• 2)

  Explain the types of dyes based on their method of application.

• 3)

  Name various food additives and explain their functions.

• 4)

  Sudha met with a fire accident. What kind of drug(s), she must take?

• 5)

  The soil pH of a crop land is 5. What kind of fertilizers should be used in that land?

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What is catenation? How does carbon form catenated compounds?

• 2)

  What are the chemical reactions of carbon? 

• 3)

  Name the three safer resin codes of plastics and describe their features.

• 4)

  Why do carbon exist mostly in combined state?

• 5)

  When a carbon fuel burns in less aerated room, it is dangerous to stay there. Why?

9th Standard English Medium Science Subject Sound Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Describe with diagram, how compressions and rarefactions are produced.

• 2)

  Verify experimentally the laws reflection of sound.

• 3)

  List the applications of sound.

• 4)

  Explain how does SONAR work?

• 5)

  Explain the working of human ear with diagram.

9th Standard English Medium Science Subject Fluids Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  With an appropriate illustration prove that the force acting on a smaller area exerts a greater pressure.

• 2)

  How does an object’s density determine whether the object will sink or float in water?

• 3)

  State the laws of flotation.

• 4)

  How does a fish manage to rise up and move down in water?

• 5)

  You have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. In reality, one is heavier than other. Can you say which one is heavier and why?

9th Standard English Medium Science Subject Fluids Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Describe the construction and working of mercury barometer.

• 2)

  Explain the construction and working of a hydrometer with diagram.

• 3)

  How high does the mercury barometer stand on a day when atmospheric pressure is 98.6 kPa?

• 4)

  If you put one ice cube in a glass of water and another in a glass of alcohol, what would you observe? Explain your observations.

• 5)

  Why does a boat with a hole in the bottom would eventually sink?

9th Standard English Medium Science Subject Organization of Tissues Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What are meristems? Describe the distribution and functions of various types of meristems.

• 2)

  List out the differences between mitosis and meiosis.

• 3)

  What is the consequence that occur if all blood platelets are removed from the blood?

• 4)

  Which are not true cells in the blood? Why?

• 5)

  If cell (A) has undergone one mitotic division and another cell (B) has completed its meiotic division. The number of cells produced in A and B would be
  Cell A:                       Cell B :

9th Standard English Medium Science Subject Organization of Tissues Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What are permanent tissues? Describe the different types of simple permanent tissue.

• 2)

  Write about the elements of Xylem.

• 3)

  Give one reason for the following
  a. Blood is fluid connective tissue
  b. Skeletal muscles contain contractile proteins
  c. Heart muscles are involuntary in nature

• 4)

  Which are not true cells in the blood? Why?

• 5)

  You are now familiarised with various plant and animal tissues. Point out any five differences between these tissues.

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Why does distilled water not conduct electricity whereas rain water does?

• 2)

  Plaster of Paris should be stored in a moisture proof container. why?

• 3)

  Write any four uses of bases.

• 4)

  Write any five uses of salts.

• 5)

  Sulphuric acid is called King of Chemicals. Why is it called so?

9th Standard English Medium Science Subject Chemical Bonding Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  List down the differences between Ionic and Covalent compounds.

• 2)

  Give an example for each of the following statements.
  a. A compound in which two Covalent bonds are formed
  b. A compound in which one ionic bond is formed
  c. A compound in which two Covalent and one Coordinate bonds are formed
  d. A compound in which three covalent bonds are formed
  e. A compound in which Coordinate bond is formed

• 3)

  Identify the incorrect statement and correct them.
  a. Like covalent compounds, Coordinate compounds also contain charged particles (ions), so they are good conductors of electricity.
  b. Ionic bond is a weak bond when compared to Hydrogen bond.
  c. Ionic or electrovalent bonds are formed by mutual sharing of electrons between atoms.
  d. Loss of electrons is called Oxidation and Gain of electron is called Reduction.
  e.The electrons which are not involved in bonding are called valence electrons.

• 4)

  Discuss in brief about the properties of Coordinate covalent compounds.

• 5)

  Find the oxidation number of the elements in the following compounds.
  a. C in CO₂
  b. Mn in MnSO₄
  c. N in HNO₃

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Draw a circuit with a 2\(\Omega\) and 5\(\Omega\) resistors in series. Connect another 3\(\Omega\) resistor parallel to the above connection.

• 2)

  How are the home appliances connected in general, in series or parallel. Give reasons.

• 3)

  List the safety features while handling with electricity.

• 4)

  Find the value of current in the circuit.
  

• 5)

  A wire of resistance 10 \(\Omega\) is bent in the form of a circle. Find the effective resistance between the points A and B which lies on the diameter.

9th Standard English Medium Science Subject Atomic Structure Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What conclusions were made from the observations of Gold foil experiment?

• 2)

  Explain the postulates of Bohr’s atomic model.

• 3)

  State the Gay Lussac’s law of combining volumes, explain with an illustration.

• 4)

  Calculate the volume of oxygen required for the complete combustion of 20 cm³ of methane[CH_4(g) +2O_2⟶ CO_2(g) +2H₂O_(g)]

• 5)

  Calculate the mass of a proton, given its charge = + 1.60 \(\times\)10⁻¹⁹ C charge / mass = 9.58 \(\times\) 10⁷ C kg^-1

9th Standard English Medium Science Subject Light Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is i) at C ii) between C and F iii) between F and P of the mirror.
  b) Mention in the diagram the position and nature of image in each case.

• 2)

  State and verify laws of refraction using a glass slab.

• 3)

  The radius of curvature of a convex mirror is 40 cm. Find its focal length  

• 4)

  A concave mirror produces three times magnified real image of an object placed at 7 cm in front of it. Where is the image located?

• 5)

  The speed of light in water is 2.25 × 10⁸ ms^-1. If the speed of light in vacuum is 3 × 10⁸ ms^-1, calculate the refractive index of water. 

9th Standard English Medium Science Subject Light Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  A car is fitted with a convex mirror of focal length 20 cm. Another car is 6 m away from the first car.
  a) Find the position of the second car as seen in the mirror of the first
  b) What is the size of the image if the second car is 2 m broad and 1.6 m high?
  Focal length = 20 cm (convex mirror)
  Object distance = -6m
   = -600 cm
  Image distance v =?
  Calculation for position of image using mirror equation

• 2)

  Explain with diagrams how refraction of incident light takes place from
  a) rarer to denser medium
  b) denser to rarer medium
  c) normal to the surface separating the two media.

• 3)

  Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and Principal focus and state three characteristics of the image.

• 4)

  An object of height 2 cm is placed at a distance 20 cm in front of a concave mirror of focal length 12 cm. Find the position, size and nature of the image.

• 5)

  Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Speed of light in vacuum is 3 × 10⁸ ms^-1).

9th Standard English Medium Science Subject Motion Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms^-2 with what velocity will it strike the ground? After what time will it strike the ground?

• 2)

  A racing car has a uniform acceleration of 4 ms^-2. What distance it covers in 10 s after start?

• 3)

  The adjacent diagram shows the velocity-time graph of a body. During what time interval is the motion of the body accelerated. Find the acceleration in the time interval mentioned in part 'a'. What is the distance travelled by the body in the time interval mentioned in part a?

• 4)

  From the following Table, check the shape of the graph.

  Time (s)	0	2	4	6	8	10	12
  Velocity(ms-1)	0	20	40	40	40	20	0

9th Standard English Medium Science Subject Motion Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  During an experiment, a signal from a spaceship reached the ground station in five seconds. What was the distance of the spaceship from the ground station? The signal travels at the speed of light that is 3 × 10⁸ ms^-1?

• 2)

  An Athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 m and 20 s?

• 3)

  A train travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of ‒0.5 ms^-2. Find how far the train will go before it is brought to rest?

• 4)

  The following graph shows the motion of a car. What do you infer from the graph along OA and AB? What is the speed of the car along AB and what time it reached this speed.
  

9th Standard English Medium Science Subject Measurement Book Back 5 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 10¹⁵ m and Ezhilan argues that it is 9.46 × 10¹² km. Who is right? Justify your answer.

• 2)

  Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.

• 3)

  Explain a method to find the thickness of a hollow tea cup.

• 4)

  Find out any ‘ten words’ related to measurement from the grid
  

• 5)

  Calculate the diameter of the sphere which is shown in the Figure. Assume the scale has no zero error.
  
   

9th Standard English Medium Science Subject Measurement Book Back 5 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  The main scale reading while measuring the thickness of a rubber ball using Vernier caliper is 7 cm and the Vernier scale coincidence is 6. Find the radius of the ball.

• 2)

  Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.

• 3)

  Find the mass of an object weighing 98 N.

• 4)

  How will you find the thickness of a one rupee coin?

• 5)

  Calculate the positive and negative error from the given figure
  

9th Standard English Medium Science Subject World of Microbes Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Distinguish between Virion and Viroid.

• 2)

  A baby is suffering from diarrhoea, while other babies in the same locality do not. Mention the possible causes that you think. What would be the possible solutions for this?

• 3)

  Name the vector of the malarial parasite. Mention the species of malarial parasite which cause malignant and fatal malaria.

• 4)

  What is triple antigen? Mention the disease which can be prevented by using the antigen.

• 5)

  Sanjay had an attack of chicken pox and has just recovered. The health officer of his locality says that the disease would not occur again for him. What would be the reason for this?

9th Standard English Medium Science Subject Economic Biology Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What are secondary metabolites?

• 2)

  What are the types of vegetable garden?

• 3)

  Why do we call Haryana and Kankrej breed of cattle as dual purpose breeds?

• 4)

  What is the nutritional importance of fish liver oils? Name any two marine fishes which yield these oils.

• 5)

  What are the species of earthworm used for vermiculture?

9th Standard English Medium Science Subject Economic Biology Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What do you know about AYUSH?

• 2)

  Mention any two mushroom preservation methods.

• 3)

  How is division of labour observed in honey bees?

• 4)

  Enumerate the advantages of vermicompost over chemical fertiliser.

• 5)

  List the medicinal importance of honey.

9th Standard English Medium Science Subject Environmental Science Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  According to you, which process of water cycle is adversely affected by human activities?

• 2)

  What is adaptation?

• 3)

  List some of the ways in which you could save water in your home and school?

• 4)

  What is grey water?

• 5)

  What are the uses of recycled water?

9th Standard English Medium Science Subject Environmental Science Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  How do human activities affect nitrogen cycle?

• 2)

  What are the challenges faced by hydrophytes in their habitat?

• 3)

  Why is it important to conserve water?

• 4)

  What is grey water?

• 5)

  What is IUCN? What is the vision of IUCN?

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Differentiate graphite and diamond.

• 2)

  What are saturated and unsaturated compounds called?

• 3)

  Carbon do not form ionic compounds. Why?

• 4)

  What is the valency of carbon in carbon monoxide?

• 5)

  Why are one-time use and throwaway plastics harmful?

9th Standard English Medium Science Subject Universe Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Write a note on the inner planets

• 2)

  Write about comets.

• 3)

  State Kepler’s laws.

• 4)

  Write short notes on Gaganyaan

• 5)

  What factors have made life on Earth possible?

9th Standard English Medium Science Subject Sound Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Name the device which is used to produce sound in laboratory experiments.

• 2)

  What should an object do to produce sound?

• 3)

  Name the physical quantity whose SI unit is ‘hertz’. Define.

• 4)

  How does the sound produced by a vibrating object in a medium reach your ears?

• 5)

  The frequency of a source of sound is 600 Hz. Calculate the number of times it
  vibrates in a minute?

9th Standard English Medium Science Subject Sound Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Through which medium sound travels faster, iron or water? Give reason.

• 2)

  Can sound travel through vacuum?

• 3)

  What is meant by supersonic speed?

• 4)

  You and your friend are on the moon. Will you be able to hear any sound produced by your friend?

• 5)

  A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard?
  (Given g = 10 m s^–2 and speed of sound = 340 m s^–1)

9th Standard English Medium Science Subject Fluids Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  On what factors the pressure exerted by the liquid depends on?

• 2)

  Why it is easy to swim in river water than in sea water?

• 3)

  State Pascal’s law.

• 4)

  Density of mercury is 13600 kg m^–3. Calculate the relative density.

• 5)

  The density of water is 1g cm^–3. What is its density in S.I. units?

9th Standard English Medium Science Subject Fluids Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Why does a helium balloon float in air?

• 2)

  What is meant by atmospheric pressure?

• 3)

  A block of wood of weight 200 g floats on the surface of water. If the volume of block is 300 cm³ calculate the upthrust due to water.

• 4)

  A body of voloume 100 cc is immersed completely in water contained in a jar. The weight of water and the jar before immersion of the body was 700 g. Calculate the weight of water and jar after immersion.

• 5)

  Calculate the apparent weight of wood floating on water if it weighs 100g in air.

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Name the types of teeth present in an adult human being. Mention the functions of each.

• 2)

  What are the end products of digestion of starch, proteins and fats respectively?

• 3)

  Explain the structure of nephron.

• 4)

  What are the functions of ovaries and uterus in female reproductive system?

• 5)

  Give reasons for the following:
  a. Scrotum remains outside the body of human males.
  b. The wall of the stomach is not digested by its own enzyme.

9th Standard English Medium Science Subject Organization of Tissues Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What is complex tissue? Name the various kinds of complex tissues.

• 2)

  Mention the most abundant muscular tissue found in our body. State its function.

• 3)

  What are the fibres present in the matrix of loose connective tissue?

• 4)

  What is skeletal connective tissue? How is it helpful in the functioning of our body?

• 5)

  Why should gametes be produced by meiosis during sexual reproduction?

9th Standard English Medium Science Subject Organization of Tissues Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  How are collagen fibres organized in dense connective tissues

• 2)

  Which tissue is called middleman between tissue cells and blood? Why?

• 3)

  In which stage of mitosis the chromosomes align in an equatorial plate? How?

• 4)

  Why is blood considered to be a connective tissue?

• 5)

  Why is meiosis called reductional division and mitosis as equational division?

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Write any four uses of acids.

• 2)

  What are the various uses of Aquaregia.

• 3)

  Two acids ‘A’ and ‘B’ are given. Acid A gives one hydrogen ion per molecule of the acid in solution. Acid B gives two hydrogen ions per molecule of the acid in solution.
  (i) Find out the acid A and acid B.
  (ii) Which acid is called the King of Chemicals?

• 4)

  Find the odd one out: Lemon juice, Tomato juice, House hold ammonia, Coffee

• 5)

  What is neutralization reaction? Give an example.

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Name any two metals which do not react with sodium hydroxide.

• 2)

  Give the significance of pH of soil in agriculture.

• 3)

  What are the uses of Plaster of Paris?

• 4)

  Define aquaregia.

• 5)

  What is neutralization reaction? Give an example.

9th Standard English Medium Science Subject Chemical Bonding Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  NaCl₄ is insoluble in carbon tetrachloride but soluble in water. Give reason.

• 2)

  Write a note on different types on bonds?

• 3)

  Draw the electron distribution diagram for the formation of Carbon di oxide (CO₂) molecule.

• 4)

  Identify the compounds as Ionic/Covalent/Coordinate based on the given characteristics.
  a. Soluble in non polar solvents -
  b. undergoes faster/instantaneous reactions -
  c. Non conductors of electricity -
  d. Solids at room temperature -

• 5)

  Considering MgCl₂ as ionic compound and CH₄ as covalent compound give any two differences between these two compounds.

9th Standard English Medium Science Subject Chemical Bonding Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Explain Octet rule with an example.

• 2)

  Find the odd one out.
  (i) H₂, Cl₂, NaCl, O₂, N₂
  (ii) H₂O₂, MnO₄^–, LiAlH₄, Cr₂O₇^2–

• 3)

  Identify the following reactions as oxidation or reduction
  a. Na \(\rightarrow\)Na⁺ + e^-.
  b. Fe³⁺ + 2e^-\(\rightarrow\) Fe⁺

• 4)

  An atom X with atomic number 20 combines with atom Y with atomic number 8. Draw the dot structure for the formation of the molecule XY.

• 5)

  Why are Noble gases inert in nature?

9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  State an important advantage of ac over dc.

• 2)

  A portable radio has a built in transformer so that if can work from the mains instead of batteries. Is this a step up or step down transformer?

• 3)

  State Faraday’s laws of electromagnetic induction.

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  On what factor does the resistance of a wire depend at a particular temperature?

• 2)

  Calculate the amount of charge that would flow in 2 hours through an element of an electric bulb drawing a current of 2.5A.

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  State Ohm’s law.

• 2)

  Name any two appliances which work under the principle of heating effect of current.

• 3)

  The values of current I flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?

  I (ampere)	0.5	1.0	2.0	3.0	4.0
  V (volt)	1.6	3.4	6.7	10.2	13.2

  [Hint: plot V-I graph and take slope]

9th Standard English Medium Science Subject Heat Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Ice is kept in a double-walled container. Why?

• 2)

  Differentiate convection and radiation

• 3)

  What is specific heat capacity?

• 4)

  Define specific latent heat capacity

• 5)

  A piece of aluminium of mass 0.5 kg is heated to 100ºC and then placed in 0.4 kg of water at 10ºC. If the resulting temperature of the mixture is 30ºC, what is the specific heat capacity of aluminium? (SHC of water = 4,200J/KgºC)

9th Standard English Medium Science Subject Heat Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What could be the final temperature of a mixture of 100 g of water at 90ºC and 600g of water at 20ºC?

9th Standard English Medium Science Subject Nutrition and Health Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Write any one function of the following minerals
  a) Calcium   b) Sodium
  c) Iron          d) Iodine

• 2)

  Explain any two methods of food preservation.

• 3)

  Sanjana wants to buy a jam bottle in a grocery shop. What are the things she should observe on the label before purchasing it

• 4)

  Give one reason for the following statements:
  a. Salt is added as a preservative in pickles___________
  b. We should not eat food items beyond the expiry date ______________
  c. Deficiency of calcium in diet leads to poor skeletal growth ___________

• 5)

  What are the effects of consuming adulterated food?

9th Standard English Medium Science Subject Animal Kingdom Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  List the excretory organs of invertebrates in relation to their habitats.

• 2)

  Differentiate between flat worms and round worms?

• 3)

  List five characteristic features of fishes.

• 4)

  How is the reproductive characters of mammals different from those of Aves?

• 5)

  How are the limbs of the birds adapted for avian life?

9th Standard English Medium Science Subject Animal Kingdom Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  How is the body wall of coelenterates arranged?

• 2)

  Outline the flow charts of Phylum Chordata.

• 3)

  Comment on the aquatic and terrestrial habits of amphibians.

• 4)

  On the basis of Position of notochord, classify the different Prochordates. Justify your answer.

• 5)

  List the integumentary glands of mammals.

9th Standard English Medium Science Subject Atomic Structure Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  An atom has 11 protons, 11 electrons and 12 neutrons. What is the atomic number and the name of the element?

• 2)

  State the law of multiple proportions

• 3)

  List the uses of isotopes?

• 4)

  What is isotone? Give an example.

• 5)

  Draw the structure of oxygen and sulphur atoms.

9th Standard English Medium Science Subject Matter around us Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Why are gases easily compressible whereas solids are incompressible?

• 2)

  Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.

• 3)

  What is an adsorbate and adsorbent?

• 4)

  Differentiate between filtrate and distillate

• 5)

  How will you separate a mixture containing saw dust, naphthalene and iron filings?

9th Standard English Medium Science Subject Matter around us Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Hold a ‘smiley ball’ and squeeze it. Can you compress it? Justify your answer?

• 2)

  Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

• 3)

  What is an adsorbate and adsorbent?

• 4)

  What is meant by Rf value?

• 5)

  Name the apparatus that you will use to separate the components of mixtures containing two,
  i. miscible liquids
  ii. immiscible liquids

9th Standard English Medium Science Subject Light Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  An object 2 cm high is placed at a distance of 16 cm from a concave mirror which produces a real image 3 cm high. Find the position of the image.

• 2)

  Pick out the concave and convex mirrors from the following and tabulate them Rear-view mirror, Dentist’s mirror, Torch-light mirror, Mirrors in shopping malls, Make-up mirror.

• 3)

  State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.

• 4)

  What is meant by magnification? Write its expression. What is its sign for the image and virtual image?

• 5)

  Write the spherical mirror formula and explain the meaning of each symbol used in it.

9th Standard English Medium Science Subject Motion Book Back 3 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What remains constant in uniform circular motion? And What Changes continuously in uniform circular motion?

• 2)

  What is meant by uniform circular motion? Give two examples of uniform circular motion.

• 3)

  Why did the actual speed differ from average speed?

• 4)

  The speed of a particle is constant. Will it have acceleration? Justify with an example.

• 5)

  A motorcycle travelling at 20ms^-1 has an acceleration of 4ms^-2. What does it explains about the velocity of the motorcycle.

9th Standard English Medium Science Subject Motion Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define velocity?

• 2)

  What do you mean by uniform motion?

• 3)

  What do you understand about negative acceleration?

• 4)

  Is the uniform circular motion accelerated? Give reasons for your answer?

• 5)

  A bus travel, a distance of 20 km from Chennai central airport in 45 minutes. What is the average speed?

9th Standard English Medium Science Subject Measurement Book Back 3 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Write the rules that are followed in writing the symbols of units in SI system.

• 2)

  Write the need of a standard unit.

• 3)

  Differentiate mass and weight.

• 4)

  What is the measuring unit of the thickness of a plastic carry bag?

• 5)

  How will you measure the least count of vernier caliper?

9th Standard English Medium Science Subject Economic Biology Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define Floriculture

• 2)

  Define Pomiculture

9th Standard English Medium Science Subject World of Microbes Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define the following.
  1. Pathogen
  2. Bacteriophages
  3. Plasmid
  4. Vaccines
  5. Prions

9th Standard English Medium Science Subject Economic Biology Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define Apiculture

• 2)

  Define Compost

• 3)

  Define Pinning

• 4)

  Differentiate Pollen and Nectar

9th Standard English Medium Science Subject Universe Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What is solar system?

• 2)

  What is a cosmic year?

• 3)

  Define orbital velocity.

• 4)

  Define time period of a satellite.

• 5)

  What is a satellite? What are the two types of satellites?

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  How is the small intestine designed to absorb digested food?

• 2)

  Why do we sweat?

• 3)

  State any two vital functions of human kidney.

• 4)

  How is it possible to control the urge to pass urine?

• 5)

  Write the names of male and female sex hormone.

9th Standard English Medium Science Subject Organization of Tissues Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Give two types of Sclerenchyma.

• 2)

  Name the components of xylem and phloem.

• 3)

  Name the tissue that connects muscle to bone in humans.

• 4)

  Name tissue that stores fat in our body.

• 5)

  Name the tissue present in the brain.

9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  State Fleming’s Left Hand Rule.

• 2)

  Define magnetic flux density.

• 3)

  List the main parts of an electric motor.

• 4)

  Draw and label the diagram of an AC generator.

• 5)

  Differentiate step up and step down transformer.

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  On what factors does the electrostatic force between two charges depend?

• 2)

  Define electric field.

• 3)

  A bird sitting on a high power electric line is still safe. How?

• 4)

  Does a solar cell always maintain the potential across its terminals constant? Discuss.

• 5)

  Can electroplating be possible with alternating current?

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  On what factors does the electrostatic force between two charges depend?

• 2)

  Define electric field.

• 3)

  A bird sitting on a high power electric line is still safe. How?

• 4)

  Does a solar cell always maintain the potential across its terminals constant? Discuss.

• 5)

  Rubbing a comb on hair makes the comb get – 0.4C.
  (a) Find which material has lost electron and which one gained it.
  (b) Find how many electrons are transferred in this process.

9th Standard English Medium Science Subject Nutrition and Health Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Differentiate : Kwashiorkar from Marasmus 

• 2)

  Differentiate: Macronutrients from micronutrients.

• 3)

  What is an adulterant?

• 4)

  Name any two naturally occuring toxic substances in food.

• 5)

  What factors are required for the absorption of Vitamin D from the food by the body?

9th Standard English Medium Science Subject Animal Kingdom Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  What is a nematocyst?

• 2)

  Which organism is called as Friend of farmers? Why?

• 3)

  Differentiate between tube feet and false feet.

• 4)

  What is acrania?

• 5)

  Why are frogs said to be amphibians?

9th Standard English Medium Science Subject Animal Kingdom Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define taxonomy?

• 2)

  Why coelenterates are called diploblastic animals?

• 3)

  List the respiratory organs of amphibians.

• 4)

  Are Jelly fish and star fish similar to catfish? Give reasons.

• 5)

  What are the sub-phylum of prochordates?

9th Standard English Medium Science Subject Plant Physiology Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Name the movement seen in Pneumatophores of Avicennia

• 2)

  Which flowering plant shows photonasty just opposite to that of Dandelion?

• 3)

  Fill in the blanks:
  6CO₂+________\(\overset { Sunlight }{ \underset { Chlorophyll }{ \longrightarrow } } \) _____ +6H₂O+6O₂ \(\uparrow\)

• 4)

  What is chlorophyll?

9th Standard English Medium Science Subject Plant Physiology Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.

  Stimulus	Light	Gravity
  Shoot	+	-
  Root	?	+

  

• 2)

  What is the other name for thigmonasty?

• 3)

  Give an example for negative hydrotropism.

• 4)

  Which gas is evolved during photosynthesis?

• 5)

  Give an example for micronutrients.

9th Standard English Medium Science Subject Atomic Structure Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Name an element which has the same number of electrons in its first and second shell

• 2)

  Compare the charge and mass of protons and electrons.

• 3)

  For an atom ‘X’, K, L and M shells are completely filled. How many electrons will be present in it?

• 4)

  Arrange the following in the increasing order of atomic number
  Calcium, Silicon, Boron, Magnesium, Oxygen, Helium, Neon, Sulphur, Fluorine and Sodium

9th Standard English Medium Science Subject Matter around us Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?

• 2)

  Name the method you would adopt to separate a mixture of ammonium chloride and common salt.

• 3)

  Name the sublimate that you will be getting when you heat a mixture of
  i. Iodine and sand
  ii. Sodium chloride and ammonium chloride.

• 4)

  You have just won a medal made of 22-carat gold. Have you just procured a pure substance or impure substance?

• 5)

  What produces more severe burns, boiling water or steam? Why?

9th Standard English Medium Science Subject Matter around us Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  How gaseous pressure arises?

• 2)

  Which state of matter has the highest kinetic energy?

• 3)

  Define a solute and a solvent

• 4)

  What is meant by desalination of sea water?

• 5)

  'Shake well before use'. This is the instruction on a bottle of medicine. What kind of a mixture is contained in the bottle? Give reason.

9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - II - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  The speed of light in air is 3 \(\times\) 10⁸ms^-1 and in glass it is 2 \(\times\) 10⁸ms^-1 what is the refractive index of glass

• 2)

  Give two examples of transparent medium that are denser than air

• 3)

  A coin in a glass beaker appears to rise as the beaker is slowly filled with water, why?

• 4)

  Name the spherical mirror(s) that has/have 
  i) Virtual principal focus
  ii) Real principal focus

• 5)

  What is speed of light in vacuum? 

9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  According to cartesion sign convention, which mirror and which lens has negative focal length?

• 2)

  Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image

• 3)

  If an object is placed at the focus of a concave mirror, where is the image formed?

• 4)

  Why does a ray of light bend when it travels from one medium to another?

• 5)

  Concave mirrors are used by dentists to examine teeth. Why?

9th Standard English Medium Science Subject Measurement Book Back 2 Mark Questions with Solution Part - I - by Question Bank Software - Jun 15, 2021 - View & Read

• 1)

  Define measurement

• 2)

  Define standard unit.

• 3)

  What do you know about pitch of screw gauge?

• 4)

  Convert: 300 K into Celsius scale,

• 5)

  Convert: 104°F into Celsius scale.

9th Standard English Medium Science Subject Hardware and Software Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Find out the part that is not found in CPU?

• 2)

  Which of the following is correct?

• 3)

  LINUX is a

• 4)

  Find out the Paid and Proprietary software from the given list

• 5)

  _________is an Operating System.

9th Standard English Medium Science Subject World of Microbes Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The major constituent of vinegar is

• 2)

  Which of the following is transmitted through air?

• 3)

  One of the means of indirect transmission of a disease is

• 4)

  Mosquito borne viral diseases are

• 5)

  Which one of the following is a pair of viral disease?

9th Standard English Medium Science Subject World of Microbes Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Mosquito borne viral diseases are

• 2)

  Which one of the following is a pair of viral disease?

• 3)

  The primary organ infected during tuberculosis is

• 4)

  The organ affected by jaundice is

• 5)

  Poliomyelitis virus which causes infantile paralysis enters the body through

9th Standard English Medium Science Subject Economic Biology Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which one of the following is not an exotic breed of cow?

• 2)

  Which of the following are Indian cattle?
  i. Bos indicus
  ii. Bos domesticus
  iii. Bos bubalis
  iv. Bos vulgaris

• 3)

  Drones in the honey bee colony are formed from

• 4)

  Which one of the following is refered as red worms?

• 5)

  Mehsana is a breed of

9th Standard English Medium Science Subject Economic Biology Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Drones in the honey bee colony are formed from

• 2)

  Which one of the following is refered as red worms?

• 3)

  Mehsana is a breed of

• 4)

  __________ is the method of growing plants without soil.

• 5)

  The plant body of mushroom is

9th Standard English Medium Science Subject Environmental Science Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  All the factors of biosphere which affect the ability of organisms to survive and reproduce are called as _______________.

• 2)

  Free living soil bacteria such as Pseudomonas sp are responsible for the ______________ process in the nitrogen cycle.

• 3)

  Increased amount of ___________ in the atmosphere, results in greenhouse effect and global warming

• 4)

  In some xerophytes, leaves are modified into spines as an adaptation ________________.

• 5)

  Which of the following is one of the strategies to conserve water?

9th Standard English Medium Science Subject Environmental Science Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The ice sheets from the north and south poles and the icecaps on the mountains, get converted into water vapour through the process of ______________.

• 2)

  The atmospheric carbon dioxide enters into the plants through the process of ______________.

• 3)

  Which of the following is not an adaptation of hydrophytes?

• 4)

  Identify the incorrect statement with respect to adaptations of earthworm.

• 5)

  Specific constituents such as nitrogen, phosphorus, suspended solids and heavy metals found in the wastewater are removed during ___________ treatment of water recycling process.

9th Standard English Medium Science Subject Applied Chemistry Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  One Nanometre is

• 2)

  1% solution of Iodoform is used as

• 3)

  The age of a dead animal can be determined by using an isotope of ____________

• 4)

  This type of food protect us from deficiency diseases.

• 5)

  The groups responsible for the colour of an organic compound is called

9th Standard English Medium Science Subject Applied Chemistry Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The antibiotic Penicillin is obtained from ___________ 

• 2)

  The cathode of an electrochemical reaction involves ____________

• 3)

  Which of the following does not contain natural dyes?

• 4)

  Radiochemistry deals with

• 5)

  Chlorinated hydrocarbons are used as

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which of the following does not contain double bond

• 2)

  Raagav brings his lunch every day to school in a plastic container which has resin code number 5. The container is made of

• 3)

  Which of the following plastic items are banned by the Government of Tamil Nadu as of 1st January 2019?

• 4)

  The lead pencil contains

• 5)

  Plastic resin codes are shown as three chasing arrows in a ______________ with a number in the middle or letters (an acronym of that plastic type).

9th Standard English Medium Science Subject Carbon and its Compounds Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which of the following is highly toxic?

• 2)

  Plastics made of Polycarbonate (PC) and Acrylonitrile Butadiene Styrene (ABS) are made of resin code ___________

• 3)

  Graphite is used as lubricant in machines because

• 4)

  Graphene is one atom thick layer of carbon obtained from

• 5)

  The legal measures to prevent plastic pollution come under the ___________ Protection Act 1988.

9th Standard English Medium Science Subject Universe Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which of the following statements is correct?
  A. There are eight planets in our Solar System.
  B. Except Mars, all other planets revolve around the Sun in elliptical orbits

• 2)

  Who proposed the heliocentric model of the universe?

• 3)

  Which of the following is not a part of outer solar system?

• 4)

  Ceres is a _______.

• 5)

  The period of revolution of planet A around the Sun is 8 times that of planet B. How many times is the distance of planet A as great as that of planet B?

9th Standard English Medium Science Subject Sound Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through

• 2)

  Which of the following statement best describes frequency?

• 3)

  In the sound wave produced by a vibrating turning fork as shown in the diagram, half the wave length is represented by:
  

• 4)

  When the pitch of note by a harmonium is lowered, then the wave length of the note

• 5)

  Which of the following can produce longitudinal waves as well as transverse waves under different conditions?

9th Standard English Medium Science Subject Sound Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  If the speed of a wave is 340 m s^-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

• 2)

  The maximum speed of vibrations which produces audible sound will be in

• 3)

  The sound waves travel faster

• 4)

  The speeds of sound in four different media are given below. Which of the following is the most likely speed in ms^-1 with which the two underwater whales in a sea can talk to each other when separated by a large distance?

• 5)

  The velocities of sound waves in four media P, O, Q, R and S are 18,00 km/h, 900 km/h, 0 km/h, and 1200 km/h respectively. Which could be a liquid medium?

9th Standard English Medium Science Subject Parts of Computer Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which one of the following is an output device?

• 2)

  Name the cable that connects CPU to the monitor.

• 3)

  Which one of the following is an input device?

• 4)

  Which one of the following is an example for wireless connections?

• 5)

  Pen drive is _______device.

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Stomach of human beings mainly digests

• 2)

  Bile helps in the digestion of________

• 3)

  Excretion means______

• 4)

  The structural and functional unit of the kidney is__________

• 5)

  The common passage meant for transporting urine and sperms in male is___________

9th Standard English Medium Science Subject Organ Systems in Animals Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which of the following is not a salivary gland?

• 2)

  To prevent the entry of food into the trachea, the opening is guarded by__________

• 3)

  Excretion means______

• 4)

  Which one of the following substance is not a constituent of sweat?

• 5)

  Which of the following is not a part of female reproductive system?

9th Standard English Medium Science Subject Organization of Tissues Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which of the following is not found in a neuron?

• 2)

  White fibres of connective tissue are made up of

• 3)

  Smooth muscles occur in

• 4)

  Nerve cell does not contains

• 5)

  In a certain type of cell division the diploid number of chromosome is reduced to half. This kind of division occurs in

9th Standard English Medium Science Subject Organization of Tissues Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Companion cells are closely associated with

• 2)

  Aerenchyma is found in

• 3)

  Unstriated muscles are found in

• 4)

  Long, unbranched multinucleated cells are

• 5)

  Brush bordered epithelium is found in

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Apple contains malic acid. Orange contains_______

• 2)

  Acids turn blue litmus paper to_______

• 3)

  Since metal carbonate and metal bicarbonate are basic they react with acids to give salt and water with the liberation of__________

• 4)

  pH value of human blood is_________

• 5)

  You are given pure water to test the pH value using pH paper. It shows colour

9th Standard English Medium Science Subject Acids, Bases and Salts Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Zn + 2HCl \(\longrightarrow \) ZnCl₂ + ____\(​​​​\uparrow \)(H_2' O_2' CO₂)

• 2)

  Acids in plants and animals are organic acids. Whereas acids in rocks and minerals are_________

• 3)

  Since metal carbonate and metal bicarbonate are basic they react with acids to give salt and water with the liberation of__________

• 4)

  The nature of the tooth paste commonly used is in nature

• 5)

  The hydrated salt of copper sulphate has______colour

9th Standard English Medium Science Subject Chemical Bonding Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Number of valence electrons in carbon is

• 2)

  Atoms having 1, 2 or 3 electrons in its valence shell will readily form_____________

• 3)

  Bond formed between a metal and non-metal atom is usually____________

• 4)

  Covalent bond is formed by_________

• 5)

  Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

9th Standard English Medium Science Subject Chemical Bonding Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Sodium having atomic number 11, is ready to_______________electron/electrons to attain the nearest noble gas electronic configuration.

• 2)

  The element that would form anion by gaining electrons in a chemical reaction is ___________.

• 3)

  ____________compounds have high melting and boiling points.

• 4)

  Oxidising agents are also called as____________because they remove electrons form other substances.

• 5)

  The property which is characteristics of an Ionic compound is that

9th Standard English Medium Science Subject Periodic Classification of Elements Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  If Dobereiner is related with 'law of triads', then Newlands is related with __________.

• 2)

  Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

• 3)

  Elements in the modern periodic table are arranged in__________ groups and __________ periods.

• 4)

  The increasing order of the energy of subshells is

• 5)

  If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p¹, then it will occupy___________ block of the periodic table.

9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which of the following converts electrical energy into mechanical energy?

• 2)

  An electric generator converts

• 3)

  The part of the AC generator that passes the current from the armature coil to the external circuit is

• 4)

  Transformer works on.

• 5)

  The unit of magnetic flux density is

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  In current electricity, a positive charge refers to,

• 2)

  Electric field lines________ from positive charge and__________ in negative charge.

• 3)

  In an electrolyte the current is due to the flow of

• 4)

  The following is not a safety device.

• 5)

  Resistance of a wire depends on

9th Standard English Medium Science Subject Electric Charge and Electric Current Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Rubbing of comb with hair.

• 2)

  Potential near a charge is the measure of its________ to bring a positive charge at that point.

• 3)

  Heating effect of current is called,

• 4)

  Electroplating is an example for

• 5)

  In India the frequency of alternating current is

9th Standard English Medium Science Subject Heat Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Calorie is the unit of

• 2)

  The specific heat capacity of water is

• 3)

  Two cylindrical rods of same length have the area of cross section in the ratio 2:1. If both the rods are made up of same material, which of them conduct heat faster?

• 4)

  Two cylinders of equal height and radius are made of copper and aluminium. Which of them conducts heat faster?

• 5)

  A device in which the loss of heat due to conduction, convection and radiation is minimized in

9th Standard English Medium Science Subject Nutrition and Health Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The nutrient required in trace amounts to accomplish various body functions is ____________.

• 2)

  The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

• 3)

  The sprouting of onion and potatoes can be delayed by the process of _______________

• 4)

  Food and Adulteration Act was enforced by Government of India in the year __________.

• 5)

  An internal factor responsible for spoilage of food is ___________.

9th Standard English Medium Science Subject Animal Kingdom Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Which is not an insect?

• 2)

  Mesoglea is present in

• 3)

  Which one of the following pairs is not a poikilothermic animal?

• 4)

  Which is not a feature of chordates

• 5)

  The animal without skull is

9th Standard English Medium Science Subject Animal Kingdom Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Choose the correct terms related for Hemichordate

• 2)

  Poikilothermic organisms are

• 3)

  Excretory organ of tape worm is

• 4)

  During ecdysis which of the following is shed off

• 5)

  Find the correct sequence

9th Standard English Medium Science Subject Plant Physiology Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The bending of root of a plant in response to water is called _________ 

• 2)

  The root of the plant is __________.
  i) positively phototropic but negatively geotropic
  ii) positively geotropic but negatively phototropic
  iii) negatively phototropic but positively hydrotropic
  iv)negatively hydrotropic but positively phototropic

• 3)

  The non-directional movement of a plant part in response to temperature is called ________.

• 4)

  During photosynthesis plants exhale _______. 

• 5)

  A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to _______.

9th Standard English Medium Science Subject Plant Physiology Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Transpiration is best defined as _________ 

• 2)

  A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ____________.

• 3)

  The plant part which exhibits negative geotropism is __________.

• 4)

  Dandelion flowers open the petals in bright light during the day time but close the petals in dark at night. This response of Dandelion flowers is called ___________.

• 5)

  Chlorophyll in a leaf is required for __________.

9th Standard English Medium Science Subject Atomic Structure Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Among the following the odd pair is

• 2)

  Change in the number of neutrons in an atom changes it to

• 3)

  The term nucleons refer to

• 4)

  The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

• 5)

  The correct electronic configuration of potassium is

9th Standard English Medium Science Subject Matter around us Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The physical state of water at 373 K is

• 2)

  When we mix a drop of ink in water we get a__________

• 3)

  __________ has the same properties throughout the sample

• 4)

  The separation of denser particles from lighter particles done by rotation at high speed is called ________

• 5)

  Filtration method is effective in separating _______ mixture

9th Standard English Medium Science Subject Matter around us Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Among the following______is a mixture

• 2)

  The constituents that form a mixture are also called

• 3)

  Difference in ________________is the principle used in fractional distillation

• 4)

  ______ is essential to perform separation by solvent extraction method.

• 5)

  For a simple distillation process we need to have

9th Standard English Medium Science Subject Light Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is

• 2)

  When the reflecting surface is curved outwards the mirror formed will be

• 3)

  The focal length of a concave mirror is 5cm. Its radius of curvature is

• 4)

  When a beam of white light passes through a prism it gets

• 5)

  A real and enlarged image can be obtained by using a

9th Standard English Medium Science Subject Light Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The field of view is maximum for ________ 

• 2)

  _________ is used as reflectors in torchlight.

• 3)

  The focal length of a concave mirror is 5cm. Its radius of curvature is

• 4)

  The speed of light is maximum in

• 5)

  Which of the following statements about total internal reflection is true?

9th Standard English Medium Science Subject Motion Book Back 1 Mark Questions with Solution Part - II - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  The area under velocity – time graph represents the

• 2)

  Unit of acceleration is

• 3)

  The force responsible for drying of clothes in a washing machine is

• 4)

  The area under velocity time graph represents

• 5)

  In a 100 m race, the winner takes 10 s to reach the finishing point. The average speed of the winner is ___________ ms^-1.

9th Standard English Medium Science Subject Motion Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  A car is being driven at a speed of 20 ms^-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

• 2)

  Which one of the following is most likely not a case of uniform circular motion?

• 3)

  The centrifugal force is

• 4)

  When a body starts from rest, the acceleration of the body after 2 second in _____________ of its displacement.

• 5)

  Force involved in uniform circular motion is given by _____________.

9th Standard English Medium Science Subject Measurement Book Back 1 Mark Questions with Solution Part - I - by Question Bank Software - Jun 14, 2021 - View & Read

• 1)

  Choose the correct one

• 2)

  Rulers, measuring tapes and metre scales are used to measure

• 3)

  1 metric ton is equal to

• 4)

  Distance between Chennai and Kanyakumari can be found in

• 5)

  Which among the following is not a device to measure mass?

9th Standard Science Reduced Syllabus 2020-21 - by QB Admin - May 19, 2021 - View & Read

9th Standard Science Text Book - by QB Admin - Apr 27, 2021 - View & Read