Find out the part that is not found in CPU?

Which of the following is correct?

LINUX is a

Find out the Paid and Proprietary software from the given list

_________is an Operating System.

One of the means of indirect transmission of a disease is

Mosquito borne viral diseases are

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

The primary organ infected during tuberculosis is

The organ affected by jaundice is

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

Drones in the honey bee colony are formed from

Which one of the following is refered as red worms?

Mehsana is a breed of

__________ is the method of growing plants without soil.

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

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

Which of the following is not an adaptation of hydrophytes?

Identify the incorrect statement with respect to adaptations of earthworm.

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

The antibiotic Penicillin is obtained from ___________ 

The cathode of an electrochemical reaction involves ____________

Which of the following does not contain natural dyes?

Radiochemistry deals with

Chlorinated hydrocarbons are used as

Number of free electron(s) in each carbon of graphite is

Carbon forms large number of organic compounds due to

Which of the following does not contain double bond

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

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

Who proposed the heliocentric model of the universe?

Ceres is a _______.

The Big Bang occurred ________ years ago.

Which of the following is not a member of the solar system?

Which of the following is not a planet of our solar system?

Sound travels in air:

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

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

The sound waves travel faster

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?

Clouds float in atmosphere because of their low

In a pressure cooker, the food is cooked faster because

An empty plastic bottle closed with an airtight stopper is pushed down into a bucket filled with water. As the bottle is pushed down, there is an increasing force on the bottom as shown in graph. This is because

Unit of thrust is _____________.

Instrument used to measure relative density

Name the cable that connects CPU to the monitor.

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

Pen drive is _______device.

_____________plays an important role in a computer as an inpute device

___________is an essentional part of the computer

Stomach of human beings mainly digests

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

Bile helps in the digestion of________

The structural and functional unit of the kidney is__________

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

The tissue composed of living thin walled polyhedral cell is

Chlorenchyma is known to develop in the

Which of the following is a complex tissue?

Two long bones of the hand are dislocated in a person who met with an accident. Which among the following may be the possible reason?

Which of the following is not found in a neuron?

Apple contains malic acid. Orange contains_______

Acids turn blue litmus paper to_______

pH value of human blood is_________

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

Hydrochloric Acid reacts with metal bicarbonates to give______

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

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

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

The increasing order of the energy of subshells is

Group 16 elements are collectively called as__________

Which of the following converts electrical energy into mechanical energy?

An electric generator converts

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

Transformer works on.

The unit of magnetic flux density is

Rubbing of comb with hair.

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

In an electrolyte the current is due to the flow of

Heating effect of current is called,

The following is not a safety device.

Calorie is the unit of

The specific heat capacity of water is

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?

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

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

____________ is an electronic device which stores data and information

_________ belongs to the generation IV of the computer

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

Proteins are made of ____________ .

Lipases are _________.

How many major minerals are there in the human body?

Without ____________ particular metabolic processes could not exist.

Identify the mineral which regulates nerve and muscles activity?

The smallest bat lives in_________.

Adult male worm of Ascaris ranges from__________.

Notochord extends forward beyond the brain in_________.

Lateral line sense organs are present in_________.

Myotomes are present in___________.

Among the following which one protects our mother earth?

The discovery of Jan Baptist van Helmont was on________________ of the banyan tree

Priestley concluded that spring of mint had absorbed _____________.

To de-starch the plant, the plant should be kept is darkroom for_________________.

Identify the emerald green sea slug________________.

The term nucleons refer to

The correct electronic configuration of potassium is

Law of multiple proportions was proposed by _________

The compounds N₂O, NO₂, N₂O₄, N₂O₅ explains___________ law.

Most of the fast moving \(\alpha \)  particles passed straight through the gold foil explains __________

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

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

____________compounds have high melting and boiling points.

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

Alkali and alkaline earth metals form____________ compound when they react with nonmetals

__________ has the same properties throughout the sample

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

Filtration method is effective in separating _______ mixture

Gas particles can be forced to get closer and can be easily compressed. So _______ increases.

Particles of matter are in constant motion as they possess ______energy.

The speed of light is maximum in

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

Mirrors having spherical surface of reflection are __________________

The mirror that diverge the light rays is______________________

The centre of the reflecting surface of a spherical mirror is _____________________

Unit of acceleration is

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

The area under velocity time graph represents

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

Speed is never ______

____________is the fundamental quantity.

Unit of time is_________.

_________is not the unit of length.

Moment is equal to_________of an hour.

Density is_________.

Find out the part that is not found in CPU?

Which of the following is correct?

LINUX is a

Find out the Paid and Proprietary software from the given list

_________is an Operating System.

The most fatal form of Malaria is caused by

Syphilis is caused by

Diptheria affects the

Which of the following disease is spread by animal bite?

Microbes that generally enter the body through nose are likely to affect

The production and management of fish is called

Which one of the following is an Italian species of honey bee?

Which one of the following is not an Indian major carp?

Which of the following is an high milk yielding variety of cow?

Which Indian variety of honey bee is commonly used for apiculture?

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

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

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

How much percentage of Nitrogen consist in Earth's atmosphere?

Deforestation generally decrease ______________.

One Nanometre is

1% solution of Iodoform is used as

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

This type of food protect us from deficiency diseases.

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

A phenomenon in which an element exists in different modification in same physical state is called

The carbon atoms in fullerene are arranged in mixed

Diamond is not a good conductor of electricity because

Which of the following is highly toxic?

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

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

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

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?

Which of the following is not a member of the solar system?

Which of the following is not a planet of our solar system?

Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

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

Which of the following statement best describes frequency?

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

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

The size of an air bubble rising up in water

Clouds float in atmosphere because of their low

In a pressure cooker, the food is cooked faster because

Unit of thrust is _____________.

Instrument used to measure relative density

Which one of the following is an output device?

Which one of the following is an input device?

Pen drive is _______device.

_____________plays an important role in a computer as an inpute device

___________is an essentional part of the computer

Which of the following is not a salivary gland?

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

Excretion means______

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

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

A meristematic tissue consists of

The fibres consists of

Companion cells are closely associated with

Aerenchyma is found in

Unstriated muscles are found in

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

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

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

The nature of the tooth paste commonly used is in nature

The hydrated salt of copper sulphate has______colour

Number of valence electrons in carbon is

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

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

Covalent bond is formed by_________

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

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

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

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

Noble gases are placed in_____________ group in the modern periodic table.

The maximum number of electrons that can be accommodated in s, p ,d, and f subshells are__________

Which of the following converts electrical energy into mechanical energy?

An electric generator converts

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

Transformer works on.

The unit of magnetic flux density is

In current electricity, a positive charge refers to,

Electric field lines________ from positive charge and__________ in negative charge.

In an electrolyte the current is due to the flow of

The following is not a safety device.

Resistance of a wire depends on

Calorie is the unit of

The specific heat capacity of water is

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

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

Water is used as a coolant because it________

____________ is an electronic device which stores data and information

_________ belongs to the generation IV of the computer

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

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

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

October _____ is declared as Global Iodine deficiency day.

Identify the trace element

Fats are _____

Which is not an insect?

Mesoglea is present in

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

Which is not a feature of chordates

The animal without skull is

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

Who proposed the heliocentric model of the universe?

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

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?

Which of the following is not a member of the solar system?

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

The chemical reaction occurs during photosynthesis is ________. 

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

The plant part which exhibits negative geotropism is __________.

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 ___________.

Among the following the odd pair is

The term nucleons refer to

The correct electronic configuration of potassium is

Law of multiple proportions was proposed by _________

The compounds N₂O, NO₂, N₂O₄, N₂O₅ explains___________ law.

The physical state of water at 373 K is

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

__________ has the same properties throughout the sample

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

Filtration method is effective in separating _______ mixture

The field of view is maximum for ________ 

_________ is used as reflectors in torchlight.

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

The speed of light is maximum in

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

Slope of the velocity - time graph gives

A body moving with an initial velocity 5ms^-1 and accelerates at 2ms^-2. Its velocity after 10s is

The area under velocity – time graph represents the

Unit of acceleration is

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

Choose the correct one

1 metric ton is equal to

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

____________is the fundamental quantity.

Unit of time is_________.

There are___________fundamental units in SI system of units.

A body moving along a circular path has _______

An object is placed between F and 2F of a concave, mirror image will be formed_____________________

Evaporation takes place at the______of a liquid.

The outermost shell of an atom is called its________ shell.

With the help of common beam balance we can measure mass accurately up to_________gm.

The slope of the velocity time graph for uniformly accelerated motion give _____

A virtual and equal sized image is formed by ___________________mirrors.

A mixture can be separated into its constituents by_____

Maximum number of electrons that can be accommodated in an energy level is given by the formula ___________

Moment is equal to_________of an hour.

Area under a velocity time graph gives ______

A virtual and equal sized image is formed by ___________________mirrors.

Evaporation takes place at the______of a liquid.

James Chadwick observed when was exposed to a particle, particles with about the same mass as protons were emitted.

One meter is approximately equal to__________inches.

The hands of the clock, the spokes of wheel are example of _______

An object is placed between F and 2F of a concave, mirror image will be formed_____________________

Gel are______solutions with liquid dispersed in solid

Maximum number of electrons that can be accommodated in an energy level is given by the formula ___________

_________is not the unit of length.

If velocity of a body decreases in equal intervals of time it is termed ______

The mirror that diverge the light rays is______________________

Particles of matter are in constant motion as they possess ______energy.

James Chadwick observed when was exposed to a particle, particles with about the same mass as protons were emitted.

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

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

______ is essential to perform separation by solvent extraction method.

Transpiration is best defined as _________ 

Find the group having only marine members

The area under velocity time graph represents

The speed of light is maximum in

The term nucleons refer to

During photosynthesis plants exhale _______. 

Hermaphrodite organisms are

Unit of acceleration is

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

The constituents that form a mixture are also called

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

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

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

The area under velocity time graph represents

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

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

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

The unit of area is_________.

To measure the diameter of a thin wire_________is used.

The slope of the velocity time graph for uniformly accelerated motion give _____

To form a real image -________________mirror is required.

Evaporation takes place at the______of a liquid.

1 metric ton is equal to

The speed of light is maximum in

Difference in ________________is the principle used in fractional distillation

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

Dysentery is caused by

Rulers, measuring tapes and metre scales are used to measure

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

A real and enlarged image can be obtained by using a

__________ has the same properties throughout the sample

The correct electronic configuration of potassium is

Rulers, measuring tapes and metre scales are used to measure

Light travels________m in one second.

_________ is used as reflectors in torchlight.

Virtual and magnified image is formed by________________________mirror

Atoms of the same element having same atomic number but different Mass number are called _________

Distance between Chennai and Kanyakumari can be found in

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

A spherical mirror which has reflecting curved inward surface is ____________________mirror

Difference in ________________is the principle used in fractional distillation

Evaporation takes place at the______of a liquid.

The diameters of spherical objects are measured with a_________scale.

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

The second law of refraction is stated by ____________________

For a simple distillation process we need to have

During photosynthesis plants exhale _______. 

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

Speed is never ______

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

Protons and neutrons are collectively called as ________

The plant part which exhibits negative geotropism is __________.

Density is_________.

Force involved in uniform circular motion is given by _____________.

A body moving along a circular path has _______

Gas particles can be forced to get closer and can be easily compressed. So _______ increases.

Among the following the odd pair is

_________is the unit of distance used to measure astronomical objects outside the solar system.

The area under velocity – time graph represents the

The field of view is maximum for ________ 

A virtual and equal sized image is formed by ___________________mirrors.

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

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

_________is not the unit of length.

The centrifugal force is

The mirror used by a dental surgeon is _______________________

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

The area under velocity time graph represents

The slope of the velocity time graph for uniformly accelerated motion give _____

______ is essential to perform separation by solvent extraction method.

The pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant_______

Shoots are said to_____________.

Choose the correct one

____________is the fundamental quantity.

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

Speed is never ______

To separate two or more miscible liquids which do not differ much in the boiling points_______is employed

There are___________fundamental units in SI system of units.

The area under velocity time graph represents

The angle between the normal and the refracted ray is called angle of ________________________

______ is essential to perform separation by solvent extraction method.

An alpha particle is identical with a ___________Nucleus.

A body moving with an initial velocity 5ms^-1 and accelerates at 2ms^-2. Its velocity after 10s is

The velocity of a freely falling body ______

For a simple distillation process we need to have

Energy is neither given out nor absorbed in the preparation of_____

Botanical name of common dandelian is________________.

To measure the diameter of a thin wire_________is used.

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

The second law of refraction is stated by ____________________

Filtration method is effective in separating _______ mixture

Our bodies contain radioisotopes such as ___________which continuously emit radiation.

Unit of time is_________.

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

Mirrors having spherical surface of reflection are __________________

Gel are______solutions with liquid dispersed in solid

Among the following the odd pair is

The area under velocity – time graph represents the

The velocity time graph is parallel to X-axis it shows _______.

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

Elements which have valence electrons 1 or 2 or 3 are ____________

Identify the emerald green sea slug________________.

1 metric ton is equal to

If velocity of a body decreases in equal intervals of time it is termed ______

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

Law of multiple proportions was proposed by _________

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 ___________.

The velocity time graph is parallel to X-axis it shows _______.

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

The radius of curvature of the spherical mirror is equal to __________.

______ is essential to perform separation by solvent extraction method.

A mixture can be separated into its constituents by_____

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

A body moving along a circular path has _______

__________ has the same properties throughout the sample

The direct change of state from solid to gas is called______

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 ____________.

To measure the diameter of a thin wire_________is used.

The centre of the reflecting surface of a spherical mirror is _____________________

Particles of matter are in constant motion as they possess ______energy.

Our bodies contain radioisotopes such as ___________which continuously emit radiation.

___________________% of water is used to produce carbohydrates by the plants.

1 metric ton is equal to

____________balance is used in lab.

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

To form a real image -________________mirror is required.

Protons and neutrons are collectively called as ________

Choose the correct one

Moment is equal to_________of an hour.

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

In which direction of the motion of the particles does centripetal force act?

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

Calculate the positive and negative error from the given figure

Explain the method to find the diameter of the sphere.

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?

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.

Find the size, nature and position of image formed when an object of size 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm.

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

How will you measure the least count of vernier caliper?

The Main scale reading is 3.8 Vernier scale coincidence = 5^th division. No zero error. Find the length of the iron cylinder.

What do you understand about negative acceleration?

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

Define least count of any device.

Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?

Calculate the correct readings of the Vernier caliper L.C. 0.01 em Zero correction - Nil.

How is washing machine wash the clothes?

Copy this figure in your answer book and show the direction of the light ray after reflection

Choose the correct one

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

Unit of acceleration is________.

The area under velocity – time graph represents the

Force involved in uniform circular motion is given by _____________.

Many of the ancient system of measurement were based on the dimensions of___________.

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

The point at which the rays are converged or diverged by a mirror is _____________________

The correct electronic configuration of potassium is

Which vitamin causes bow legs?

____________is the fundamental quantity.

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

According of _______________________ of light, angle of incidence is equal to angle of reflection

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

Identify the mineral which regulates nerve and muscles activity?

There are___________fundamental units in SI system of units.

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

The centre of the sphere of which a spherical mirror is a part is called ______________________

The correct electronic configuration of potassium is

Which one of the following is a disaccharide?

Rulers, measuring tapes and metre scales are used to measure

The diameters of spherical objects are measured with a_________scale.

Which of the following graph represents uniform motion of a moving particle?

The hands of the clock, the spokes of wheel are example of _______

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

___________is the derived quantity.

The area under velocity time graph represents

The centre of the sphere of which a spherical mirror is a part is called ______________________

Among the following the odd pair is

Internal factor which is responsible for food spoilage is  ___________.

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.

Calculate the positive and negative error from the given figure

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?

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.

Write the need of a standard unit.

An object travels 16m in 4s and then another 16m in 2s. What is the average speed of the object?

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

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.

State the laws of refraction.

What is the full form of SI system?

Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?

A cyclist turning a corner leans inwards. Why?

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

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

How much percentage of Nitrogen consist in Earth's atmosphere?

Deforestation generally decrease ______________.

World water day is celebrated every year on ____________.

Biotic components include _______________.

Which part of plant consisting Nitrogen fixing bacteria?

Flagella arranged along the sides of the bacteria _____________.

Which substance is produced within an organism to prevent the spread of microorganism?

Which antibiotic is extracted from fungi?

Which of the following micro organism helps in fermentation?

Carrier of malaria causing protozoa

____________ Present in the lemon juice acts as electrolyte.

Which of the following methods is suitable for preventing iron frying pan from rusting?

Chloroform reacts with oxygen and forms this toxic substance, hence it is not used now

Paracetamol is an _____________.

Congo red is a __________.

Find out the part that is not found in CPU?

Which of the following is correct?

LINUX is a

Find out the Paid and Proprietary software from the given list

_________is an Operating System.

Apiculture is the rearing of ____________.

The quality and taste of honey depends upon the flower visited by _____________.

Nowadays organic farming and organic products are very popular, which of the following is the reason for people to prefer this kind of products.

It is a live floating nitrogen factory.

Flavonoids drug is obtained from _______________.

What is the minimum number of carbon atoms of an alkane must have to form an isomer?

Hydrocarbons on burning in the air give CO₂ and _____________.

Which Amorphous form of carbon is used in making electrode in dry cell?

The thinnest and strongest allotrope of carbon is ______________.

Incomplete combustion of carbon fuels release this toxic gas into the atmosphere.

Which of the following is not a planet of our solar system?

In a geostationary orbit, a satellite is at a distance of _______________ from the Earth.

Stars in a constellation form _____________.

Which of the following units is used to measure distance between the stars?

The member of our solar system, with highly tilted orbit is _____________.

Which of the following are infrasonic waves?

Speed of sound in solids does not depend upon __________.

The back and forth motion of the object is called ___________.

A Sonar device on a submarine send out a signal and receives an echo 5 seconds later. Calculate the speed of sound it water if the distance of the object from the submarine is 3500 m.

The phenomenon of echo of sound waves is due to _____________.

Unit of thrust is _____________.

Instrument used to measure relative density

Heavy trucks are fitted with six to eight wheels, As area increases, Pressure will ___________.

An iron ball is weighed in air and then in water by a spring balance.

When a solid is partly or wholly immersed in a fluid, it experiences an apparent loss in ____________.

Which one of the following is an output device?

_____________plays an important role in a computer as an inpute device

___________is an essentional part of the computer

A bit has a single binary value either __________ or __________

Personal computer comes under the_________ computer.

In the dental formula \(\cfrac { 2 }{ 2 } ,\cfrac { 1 }{ 1 } ,\cfrac { 2 }{ 2 } ,\cfrac { 3 }{ 3 } \)refers to__________

Lysozyme is seen in_______

Curdling of milk protein is done by___________

The act of bringing swallowed food back to the mouth is called___________

Gastric glands do not secrete__________

__________is derived from ground meristem

The____________ epithelium forms a selective permeable membrane surface.

Elastic structures which connect bone to bone are called___________

_________is seen in unicellular animals.

The ________is a long fibre like process

Hydrochloric Acid reacts with metal bicarbonates to give______

_____&_______metals do not react with HCI or HNO₃

Which of the following are the is a weak bases?

Which of the following solution is soapy to touch?

Which of the following solutions do not conduct electricity?

Alkali and alkaline earth metals form____________ compound when they react with nonmetals

___________compounds are highly brittle

_______________is an example of a covalent compound having high melting point

Which of the following compound(s) possesses high melting point?

Statement (A) : Covalent compounds are bad conductor of electricity.
Reason (B) Covalent compounds contain charged particles (ions)

Noble gases are placed in_____________ group in the modern periodic table.

Group 16 elements are collectively called as__________

d-block elements are otherwise known as_______

Assertion (A): Noble gases are chemically inert in nature.
Reason (R) : Noble gases have stable electronic structures

What are alloys?

The direction of magnetic field around a straight conductor carrying current can be determined by____________

The magnetic field produced due to a circular wire at its centre is_________

A magnetic field exerts no force on________

At the  centre of a magnet, the magnetism is____________

Induced current flows through a coil__________

A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is__________

The resistance of a straight conductor is independent of__________

Two resistances R₁ and R₂ are connected is parallel. Their equivalent resistance is__________

If in the circuit, power dissipation is 150 W, then R - is___________

The resistance of a conductor is R. If its length is doubled, then its new resistance will be_______________

The amount of heat required to raise the temperature through 1⁰C is called_________

The temperature at which a liquid gets converted into its vapour state is called its________

Ice does not melt rapidly because of

Which one of the following scales has lower fixed point at 0°C?

On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?

____________ is an electronic device which stores data and information

_________ belongs to the generation IV of the computer

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

Write a note on ENIAC.

Riboflavin is other name of vitamin _____

Diarrhoea is caused due to the deficiency of vitamin ______

Any disease caused by the presence of excess vitamin is _________ .

Blood clot is prevented by the vitamin _________ .

Proteins are made of ____________ .

How many organisms given below show radial symmetry? Earthworms, grasshopper, rotifers, jelly fish and star fish__________.

Consider the following four statements whether they are correct or wrong for the classification of animal kingdom.

Incomplete digestive system is found in__________.

Which among the following organism has water vascular system in its body?

The non-cellularjelly like layer is present in between ectoderm and endoderm in coelenterates is_________.

Shoots are said to_____________.

Rhizophora is an example for_________________.

Priestley concluded that spring of mint had absorbed _____________.

Identify the false statement

Photosynthesis occurs in most plants during the________________.

Protons and neutrons are collectively called as ________

Atoms of the same element having same atomic number but different Mass number are called _________

The electronic configuration of Neon is 2, 8. So the valency is _________

Our bodies contain radioisotopes such as ___________which continuously emit radiation.

Gay-Lussac law always dealing with________

The physical state of water at 373 K is

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

Filtration method is effective in separating _______ mixture

Solids_____into liquid

_____ is a process by which a substance changes from the liquid to gaseous state.

A real and enlarged image can be obtained by using a

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

The angle between the normal and the refracted ray is called angle of ________________________

The second law of refraction is stated by ____________________

The velocity of light in air is______________

The area under velocity time graph represents

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

Force involved in uniform circular motion is given by _____________.

The hands of the clock, the spokes of wheel are example of _______

In which direction of the motion of the particles does centripetal force act?

Distance between Chennai and Kanyakumari can be found in

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

To measure the diameter of a thin wire_________is used.

____________balance is used in lab.

_________is the unit of distance used to measure astronomical objects outside the solar system.

Choose the correct one

A body moving along a circular path has _______

The velocity of light in air is______________

Protons and neutrons are collectively called as ________

From the following options select the statement which is not applicable to frog?

Find out the part that is not found in CPU?

LINUX is a

Find out the Paid and Proprietary software from the given list

_________is an Operating System.

MAC OS

Mycology is the branch of biology that deals with the study of

Mosquito borne viral diseases are

The primary organ infected during tuberculosis is

Poliomyelitis virus which causes infantile paralysis enters the body through

Which of the following micro organism helps in fermentation?

The production and management of fish is called

Which one of the following is not an Indian major carp?

Drones in the honey bee colony are formed from

The plant body of mushroom is

It is a live floating nitrogen factory.

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

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

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

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

Deforestation generally decrease ______________.

One Nanometre is

1% solution of Iodoform is used as

The cathode of an electrochemical reaction involves ____________

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

This type of food protect us from deficiency diseases.

A phenomenon in which an element exists in different modification in same physical state is called

The carbon atoms in fullerene are arranged in mixed

Carbon forms large number of organic compounds due to

Which of the following does not contain double bond

Which of the following is highly toxic?

Who proposed the heliocentric model of the universe?

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

Ceres is a _______.

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?

The Big Bang occurred ________ years ago.

Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

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

The sound waves travel faster

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

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?

Which one of the following is an output device?

Which one of the following is an input device?

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

Pen drive is _______device.

___________is an essentional part of the computer

The size of an air bubble rising up in water

Clouds float in atmosphere because of their low

In a pressure cooker, the food is cooked faster because

In CGS system pressure is measured in ____________.

Heavy trucks are fitted with six to eight wheels, As area increases, Pressure will ___________.

Which of the following is not a salivary gland?

Stomach of human beings mainly digests

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

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

__________is the smallest gland

The tissue composed of living thin walled polyhedral cell is

Aerenchyma is found in

Unstriated muscles are found in

Smooth muscles occur in

Tendon connects

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

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

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

The nature of the tooth paste commonly used is in nature

The hydrated salt of copper sulphate has______colour

Bring out any two differences between input and output devices

What is input devices?

Write the example of input and output devices of a computer system

What is keyboard?

Explain CPU.

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

Why does a helium balloon float in air?

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

What is meant by atmospheric pressure?

State Pascal’s law.

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

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

What should an object do to produce sound?

Can sound travel through vacuum?

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

What is Big bang theory?

What is dark matter and dark energy?

Write a note on outer planets?

What are meteors and meteorites?

What is the purpose of ISS?

Differentiate graphite and diamond.

What are saturated and unsaturated compounds called?

Carbon do not form ionic compounds. Why?

What is the valency of carbon in carbon monoxide?

Why are one-time use and throwaway plastics harmful?

What are secondary metabolites?

What do you know about AYUSH?

What are the types of vegetable garden?

Mention any two mushroom preservation methods.

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

Distinguish between Virion and Viroid.

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?

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

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

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?

Define the following terms:
a. Digestion
b. Osmoregulation
c. Emulsification
d. Ovulation

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

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

Explain the structure of nephron.

What are the two factors of biosphere?

How do human activities affect nitrogen cycle?

What is adaptation?

What are the challenges faced by hydrophytes in their habitat?

Identify the given plant. How does it adapt itself to its habitat?

What are intercalary meristems? How do they differ from other meristems?

How would you differentiate between meristematic and permanent tissue?

Which tissue is the main component of tendons and ligaments? How do they differ in function?

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

How are collagen fibres organized in dense connective tissues

What are organic acids? Given examples?

How are acids classified based on ionisation? Give examples.

What is Aquaregia? Mention its uses

What does acidity of base mean?

What is Potash alum? Write its formula

What is chemical bond?

Write the basic concept of Kossel - Lewis theory

Define ionic bond

What is covalent bond?

Name of the following:
(a) An element which obtains the noble gas configuration of neon by losing three electrons.
(b) An element which gains two electrons to obtain noble gas configuration of Neon.

State an important advantage of ac over dc.

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?

Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer. While coil B is connected to a battery through a key. What would happen if
(i) a current is passed through coil B by plugging the key?
(ii) the current is stopped by removing the plug from the key?

State Faraday’s laws of electromagnetic induction.

Can two magnetic lines of force intersect? Justify your answer.

State Ohm’s law.

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

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

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

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?

[Hint: plot V-I graph and take slope]

How does the water kept in an earthen pot remain cool?

Define specific latent heat capacity

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

Why are burns caused by steam more painful than those caused by boiling water at the same temperature?

What is the amount of heat required to raise the temperature of 5 kg of iron from 30°C to 130°C? Specific heat capacity of iron = 483 Jkg^-1C^-1.

Number of valence electrons in carbon is

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

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

Covalent bond is formed by_________

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

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

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

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

The maximum number of electrons that can be accommodated in s, p ,d, and f subshells are__________

Which block of the periodic table contains metals, non-metals and metalloids?

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

Explain any two methods of food preservation.

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

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 ___________

What are the effects of consuming adulterated food?

Give an account on phylum Annelida.

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

How is the body wall of coelenterates arranged?

Differentiate between flat worms and round worms?

List five characteristic features of fishes.

Explain the types of tropisms.

Give an account of phototropism.

Write a brief note on types of nastic movements.

Briefly, explain nastic movements

How will you prove that shoots bent towards light? (OR) Experiment to demonstrate phototropism.

Why are gases easily compressible whereas solids are incompressible?

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

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

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

What is an adsorbate and adsorbent?

Methane burns in oxygen to form carbon dioxide and water vapour as given by the equation
CH_4(g) + 2O_2(g) ➝ CO_2(g)+ 2H₂O_(g)
Calculate: (i) the volume of oxygen needed to burn completely 50 cm³ of methane and (ii) the volume of carbon dioxide formed in this case.

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

State the law of multiple proportions

List the uses of isotopes?

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.

a) Complete the diagram to show how a concave mirror forms the image of the object.
b) What is the nature of the image?

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.

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

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

A sound is heard 5 s later than the lightning is seen in the sky on a rainy day. Find the distance of location of lightning? Given the speed of sound = 346 ms^-1

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.

Compare speed and velocity?

Why did the actual speed differ from average speed?

Mention the uses of velocity–time graph.

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

Write the need of a standard unit.

Differentiate mass and weight.

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

How will you measure the least count of vernier caliper?

Rubbing of comb with hair.

In an electrolyte the current is due to the flow of

The following is not a safety device.

In India the frequency of alternating current is

The resistance of a straight conductor is independent of__________

Which of the following converts electrical energy into mechanical energy?

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

Transformer works on.

The unit of magnetic flux density is

The direction of magnetic field around a straight conductor carrying current can be determined by____________

In current electricity, a positive charge refers to,

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

Electroplating is an example for

In India the frequency of alternating current is

Electrons move from__________ potential to __________ potential

Calorie is the unit of

The specific heat capacity of water is

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

The temperature at which a liquid gets converted into its vapour state is called its________

Which one of the following scales has lower fixed point at 0°C?

Define 
a. Pisiculture
b. Apiculture
c. Vermiculture
d. Mariculture
e. Floriculture
f. Compost
g. Pomiculture
h. Pinning

Define Apiculture

Define Floriculture

Arrange the following five steps of nutrition in correct sequence: (digestion, assimilation, ingestion, egestion, absorption)

The stomach secretes gastric juice, which contains hydrochloric acid. What is its function?

How is the small intestine designed to absorb digested food?

Why do we sweat?

State any two vital functions of human kidney.

Name the components of xylem and phloem.

Name tissue that stores fat in our body.

Name the tissue present in the brain.

What is plate meristem?

Differentiate Collenchyma and Sclerenchyma

Non-metallic oxides are acidic is nature.

Complete the equation HCl+ H₂O ⟶ H₃O⁺ +Cl^-

Complete the equation H⁺ +H₂O ⟶ ?

Complete the equation Mg+? ⟶ ?+H₂

Complete the equation Na₂CO₃+2HCl ⟶ ?+? +CO₂↑

State modern periodic law.

What are s-block elements?

What are p-block elements?

What are alloys?

What are metalloids? Give examples

Define magnetic flux density.

Draw and label the diagram of an AC generator.

Define the terms magnet and magnetism.

Define natural magnet.

Define artificial magnet

Which organism is called as Friend of farmers? Why?

List the respiratory organs of amphibians.

Differentiate between tube feet and false feet.

What are the sub-phylum of prochordates?

Why are frogs said to be amphibians?

Write a note on ENIAC.

Who is the father of modern computer?

Who was the first programmer?

What are the forms of computer?

How computer generations are categorised?

What is the heat in joules required to raise the temperature of 25 grams of water from 0ºC to 100ºC? What is the heat in Calories?
(Specific heat of water = 4.18 J/gºC)

How much heat energy is required to change 2 kg of ice at 0ºC into water at 20ºC? (Specific latent heat of fusion of water = 3,34,000J/kg, Specific heat capacity of water = 4200JKg^-1K^-1).

Heat gained by a body depends upon which factors?

What do you mean by thermal equilibrium?

Define latent heat of fusion?

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

What are electric lines of force?

Define electric field.

Define electric current and give its unit.

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

Give an example for a plant whose leaf shows a mesmerizing movement.

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

Give the technical terms for the following:
a) Growth dependent movement in plants.
b) Growth independent movement in plants.

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.

Name the movement seen in Pneumatophores of Avicennia

Differentiate: Macronutrients from micronutrients.

What is an adulterant?

The doctor advices an adolescent girl who is suffering from anaemia to include more of leafy vegetables and dates in her diet. Why so?

What are the symptoms or Dermatitis?

Mention the fat soluble vitamins.

1 metric ton is equal to

Slope of the velocity - time graph gives

The field of view is maximum for ________ 

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

The correct electronic configuration of potassium is

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

Write the electronic configuration of K and Cl

Copy the following and write the names of the laws and their simple definitions in the space provided.

What is combination reaction ?

What are the limitations of Rutherford's model?

How gaseous pressure arises?

Define Sublimation.

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

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

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

Give two examples of transparent medium that are denser than air

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

Copy this figure in your answer book and show the direction of the light ray after reflection

When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?

What do you conclude about the speed of light in diamond if you are told that the refractive index of diamond is 2.41?

A cyclist turning a corner leans inwards. Why?

Define the terms rest and motion.

What are the different types of motion?

Define distance.

Define displacement.

Define measurement

Define least count of any device.

What do you know about pitch of screw gauge?

Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?

Convert: 300 K into Celsius scale,

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

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

 

Find the size, nature and position of image formed when an object of size 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm.

State and verify laws of refraction using a glass slab.

Find out the part that is not found in CPU?

LINUX is a

Find out the Paid and Proprietary software from the given list

_________is an Operating System.

MAC OS

Mycology is the branch of biology that deals with the study of

Bacteria involved in curd formation is

Syphilis is caused by

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

First antibiotic ______________ was developed by ______________.

The production and management of fish is called

Which one of the following is not an Indian major carp?

Which one of the following is refered as red worms?

__________ is the method of growing plants without soil.

_________ is a nodulating type of micro organism associating symbiotically with the root of legume plants.

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

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

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

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

Nitrogen is a greenhouse gas

Which of the following does not contain natural dyes?

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

Chlorinated hydrocarbons are used as

____________ is an electrochemical cell which converts electrical energy into chemical change(Reaction).

Aspirin is an _____________

A phenomenon in which an element exists in different modification in same physical state is called

The carbon atoms in fullerene are arranged in mixed

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

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

Graphite is used as lubricant in machines because

Who proposed the heliocentric model of the universe?

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?

The Big Bang occurred ________ years ago.

The speed of Sun in km/s is _______.

India’s first satellite is _______.

Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

Which of the following statement best describes frequency?

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

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

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?

Clouds float in atmosphere because of their low

In a fluid, buoyant force exists because pressure at the ____________ of an object is greater than the pressure at the top.

The instrument used to measure atmospheric pressure is _____________.

A drinking straw works on the existence of _________.

The weight of fluid displaced determines the buoyant force on an object.

Which one of the following is an output device?

Name the cable that connects CPU to the monitor.

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

Pen drive is _______device.

VGA

Which of the following is not a salivary gland?

The structural and functional unit of the kidney is__________

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

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

The opening of the stomach into the intestine is called_________.

A meristematic tissue consists of

Which of the following is a complex tissue?

Unstriated muscles are found in

Smooth muscles occur in

The___________ tissues are made up of more than one type of cells and these wok together as a unit

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

Apple contains malic acid. Orange contains_______

pH value of human blood is_________

The nature of the tooth paste commonly used is in nature

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

Number of valence electrons in carbon is

____________compounds have high melting and boiling points.

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

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

The property which is characteristics of an Ionic compound is that

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

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

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

The increasing order of the energy of subshells is

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

Which of the following converts electrical energy into mechanical energy?

An electric generator converts

The unit of magnetic flux density is

No force acts in a current carrying conductor when it is __________ the magnetic field.

Devices which is used to convert high alternating current to low alternating current __________.

In current electricity, a positive charge refers to,

Electroplating is an example for

Resistance of a wire depends on

In India the frequency of alternating current is

Electrons move from__________ potential to __________ potential

Calorie is the unit of

In which mode of transfer of heat, molecules pass on heat energy to neighbouring molecules without actually moving from their positions?

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

The fastest mode of heat transfer is ___________.

During day time, air blows from________________to_____________

____________ is an electronic device which stores data and information

_________ belongs to the generation IV of the computer

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

III generation computer

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

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

Deficiency diseases can be prevented by taking _______________ diet.

The process of affecting the natural composition and the quality of food substance is known as _______________

Do not purchase food beyond the date of _______________

Which is not an insect?

Mesoglea is present in

Which is not a feature of chordates

Hermaphrodite organisms are

Poikilothermic organisms are

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

The tropic movement that helps the climbing vines to find a suitable support is ________. 

The chemical reaction occurs during photosynthesis is ________. 

The plant part which exhibits negative geotropism is __________.

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

Among the following the odd pair is

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

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

Calcium and Argon are examples of a pair of __________

_________ isotope is used in the nuclear reactors.

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

The speed of light is maximum in

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

A spherical mirror whose reflecting surface is curved outwards is called ___________ mirror

All distances parallel to the principal axis are measured from the ____________ of the mirror

The physical state of water at 373 K is

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

Filtration method is effective in separating _______ mixture

1500C = __________ K

An example of a substance that sublimes is ________.

Slope of the velocity - time graph gives

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

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

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

Speed is a ____________ quantity whereas velocity is a ____________ quantity

Rulers, measuring tapes and metre scales are used to measure

1 metric ton is equal to

Distance between Chennai and Kanyakumari can be found in

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

Thickness of a cricket ball is measured by _______

____________ is an electronic device which stores data and information

_________ belongs to the generation IV of the computer

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

III generation computer

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

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

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

Reproductive abnormalities are due to the deficiency of vitamin _______

The temperature required for deep freezing is ______

Which is not an insect?

Mesoglea is present in

Identify the single celled organism.

How many organisms given below show radial symmetry? Earthworms, grasshopper, rotifers, jelly fish and star fish__________.

Consider the following four statements whether they are correct or wrong for the classification of animal kingdom.

The physical state of water at 373 K is

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

______ is essential to perform separation by solvent extraction method.

Gas particles can be forced to get closer and can be easily compressed. So _______ increases.

Light, sound, heat, etc., are not matter. They are different forms of

Among the following the odd pair is

The term nucleons refer to

The correct electronic configuration of potassium is

Law of multiple proportions was proposed by _________

2H₂ + O₂ \(\longrightarrow \)2H₂O. This is a___________ reaction.

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

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

Desmodium gyrans is commonly known as_______________.

Mimosa pudica is also known as__________________.

The tip of the shoot is known as_______________.

The field of view is maximum for ________ 

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

_________ is used as reflectors in torchlight.

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

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

Slope of the velocity - time graph gives

The area under velocity – time graph represents the

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

Unit of acceleration is

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

Choose the correct one

Rulers, measuring tapes and metre scales are used to measure

1 metric ton is equal to

Distance between Chennai and Kanyakumari can be found in

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

Calorie is the unit of

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

In which mode of transfer of heat, molecules pass on heat energy to neighbouring molecules without actually moving from their positions?

The temperature at which a liquid gets converted into its vapour state is called its________

Which one of the following scales has lower fixed point at 0°C?

1 metric ton is equal to

Slope of the velocity - time graph gives

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

Among the following______is a mixture

Mesoglea is present in

Choose the correct one

Which of the following graph represents uniform motion of a moving particle?

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

Among the following______is a mixture

Dysentery is caused by

Find the mass of an object weighing 98 N.

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?

Find the size, nature and position of image formed when an object of size 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm.

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

Differentiate phototropism from photonasty.

Define transpiration.

Define photosynthesis.

Draw the diagram of open stoma and label the parts.

In the given photosynthetic experiment, what will happen to the leaf closed with black paper in starch test? Why?

Choose the correct one

Distance between Chennai and Kanyakumari can be found in

Slope of the velocity - time graph gives

Unit of acceleration is

The field of view is maximum for ________ 

____________ is an electronic device which stores data and information

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

Write a note on ENIAC.

Who was the first programmer?

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

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

An internal factor responsible for spoilage of food is ___________.

October _____ is declared as Global Iodine deficiency day.

Identify the trace element

Which is not an insect?

Identify the animal having four chambered heart

The bilaterally symmetrical larvae which transform into radially symmetrical adult is

Choose the correct terms related for Hemichordate

Crop, gizzard and air sacs are seen in

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

The chemical reaction occurs during photosynthesis is ________. 

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

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

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 ___________.

Among the following the odd pair is

The term nucleons refer to

The correct electronic configuration of potassium is

Law of multiple proportions was proposed by _________

An alpha particle is identical with a ___________Nucleus.

The physical state of water at 373 K is

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

__________ has the same properties throughout the sample

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

For a simple distillation process we need to have

The field of view is maximum for ________ 

_________ is used as reflectors in torchlight.

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

A real and enlarged image can be obtained by using a

Mirrors having spherical surface of reflection are __________________

Slope of the velocity - time graph gives

Unit of acceleration is

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

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

Speed is never ______

Choose the correct one

Rulers, measuring tapes and metre scales are used to measure

Density is_________.

Unit of acceleration is________.

Light year is the distance travelled by light in ________.

Rulers, measuring tapes and metre scales are used to measure

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

___________is the derived quantity.

Unit of time is_________.

There are___________fundamental units in SI system of units.

In a pressure cooker, the food is cooked faster because

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

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

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

The lead pencil contains

The size of an air bubble rising up in water

Sound travels in air:

Ceres is a _______.

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

The lead pencil contains

Mycology is the branch of biology that deals with the study of

The major constituent of vinegar is

Bacteria involved in curd formation is

Which of the following is transmitted through air?

Syphilis is caused by

The production and management of fish is called

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

Which one of the following is an Italian species of honey bee?

Which one of the following is not an Indian major carp?

Drones in the honey bee colony are formed from

What are the two factors of biosphere?

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

How do human activities affect nitrogen cycle?

What is adaptation?

What are the challenges faced by hydrophytes in their habitat?

One Nanometre is

The antibiotic Penicillin is obtained from ___________ 

1% solution of Iodoform is used as

The cathode of an electrochemical reaction involves ____________

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

Differentiate graphite and diamond.

What are saturated and unsaturated compounds called?

Carbon do not form ionic compounds. Why?

What is the valency of carbon in carbon monoxide?

Why are one-time use and throwaway plastics harmful?

Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

Sound travels in air:

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

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

Which of the following statement best describes frequency?

In a fluid, buoyant force exists because pressure at the ____________ of an object is greater than the pressure at the top.

The weight of the body immersed in a liquid appears to be_____________ than its actual weight.

The instrument used to measure atmospheric pressure is _____________.

The magnitude of buoyant force acting on an object immersed in a liquid depends on ___________of the liquid.

A drinking straw works on the existence of _________.

Clouds float in atmosphere because of their low

In a pressure cooker, the food is cooked faster because

Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

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

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

Clouds float in atmosphere because of their low

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

The Big Bang occurred ________ years ago.

Carbon forms large number of organic compounds due to

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).

An empty plastic bottle closed with an airtight stopper is pushed down into a bucket filled with water. As the bottle is pushed down, there is an increasing force on the bottom as shown in graph. This is because

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

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

Which of the following does not contain double bond

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

Clouds float in atmosphere because of their low

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?

Ceres is a _______.

A phenomenon in which an element exists in different modification in same physical state is called

Diamond is not a good conductor of electricity because

SI unit of temperature is

Electroplating is an example for

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

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

The tissue composed of living thin walled polyhedral cell is

The specific heat capacity of water is

Electric field lines________ from positive charge and__________ in negative charge.

Number of valence electrons in carbon is

The hydrated salt of copper sulphate has______colour

Unstriated muscles are found in

____________is the fundamental quantity.

Force involved in uniform circular motion is given by _____________.

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

For a simple distillation process we need to have

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

____________is the fundamental quantity.

Newton, henry, ampere and watt are__________named after scientist.

The area under velocity – time graph represents the

Unit of acceleration is

_________ is used as reflectors in torchlight.

Density is_________.

1 quintal is equal to_______kg.

A body moving with an initial velocity 5ms^-1 and accelerates at 2ms^-2. Its velocity after 10s is

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

Convert: 104°F into Celsius scale.

Complete the table:

Define the terms rest and motion.

What is speed?

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

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

____________is the fundamental quantity.

Light year is the distance travelled by light in ________.

Slope of the velocity - time graph gives

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

Choose the correct one

Rulers, measuring tapes and metre scales are used to measure

1 metric ton is equal to

Distance between Chennai and Kanyakumari can be found in

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

____________ is an electronic device which stores data and information

_________ belongs to the generation IV of the computer

Data processing involves________ steps

1. Abacus belongs to the first generation of the computer
2. ENIAC was used in the American military

Define computer.

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

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

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

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

An internal factor responsible for spoilage of food is ___________.

Which is not an insect?

Find the group having only marine members

Mesoglea is present in

Dysentery is caused by

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

The tropic movement that helps the climbing vines to find a suitable support is ________. 

The chemical reaction occurs during photosynthesis is ________. 

Transpiration is best defined as _________ 

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

Chlorophyll in a leaf is required for __________.

The physical state of water at 373 K is

Among the following______is a mixture

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

The constituents that form a mixture are also called

__________ has the same properties throughout the sample

Among the following the odd pair is

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

The term nucleons refer to

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

The correct electronic configuration of potassium is

The field of view is maximum for ________ 

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

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

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

The speed of light is maximum in

Choose the correct one

1 metric ton is equal to

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

Force involved in uniform circular motion is given by _____________.

_________ is used as reflectors in torchlight.

Rulers, measuring tapes and metre scales are used to measure

Which of the following graph represents uniform motion of a moving particle?

The centrifugal force is

The field of view is maximum for ________