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?