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Class 10

Explore popular questions from Our Environment for Class 10. This collection covers Our Environment previous year Class 10 questions hand picked by experienced teachers.

Our Environment

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Q 1. By which process producers like plants and blue green algae produce their food

Photosynthesis

B

Digestion

C

Both (A) & (B)

D

None of these

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Q 2. The microorganisms that break down the complex organic substance into simple inorganic substance that go into the soil and are used up once more by plants are

A

Consumers

B

Producers

Decomposers

D

None of these

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Q 3. Which of the following constitute a food-chain?

A

Grass, wheat and mango

Grass, deer and Lion

C

Goat, cow and elephant

D

Grass, fish and goat

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Q 4. The decrease of ozone in the atmosphere has been linked to synthetic chemical which is used as refrigerants and in fire extinguishers. This chemical is

Chlorofluorocarbons

B

Carbon monoxide

C

Carbon dioxide

D

None of these

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Q 5. Which of the following are environment friendly practices?

A

Carrying cloth bags to put purchases in while shopping

B

Switching off unnecessary lights and fans

C

Walking to school instead of getting your mother to drop you on her scooter

All of the above

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Q 6. In food chain

Percent of energies transfer will be respectively

1, 10, 10

B

90, 10, 10

C

1, 1, 1

D

1, 10, 0

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Q 7. The best source of energy is

A

Water

B

Soil

Plants

D

Ponds

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Q 8. Ozone depletion can lead to

A

Skin cancer

B

Eye cataract

Both A and B

D

Brain cancer