Question

Choose the correct option :-

1. Air consists of____percent oxygen.
a) 21
b) 22
c) 25
d) 89

2. 'Green House Effect' with respect to Global warming refers to
a) Cool and moist condition
b) Warming effect
c) Increased rainfall and greenery
d) Climatic changes

3. Which of the following is not the part of human environment?
a) Society
b) Water
c) House
d) Family

4. Which is an abiotic component of the environment?
a) Plant
b) Animal
c) Human
d) Soil

5. Which of the following enriches the soil for plant growth?
a) Clay
b) Humus
c) Sand
d) Gravel

6. Nature provides
a) Flowers
b) Solar heat
c) Breeze
d) All of these

7. The most abundant gas in the air is
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Helium
​

Answer 1

Answer:

1)21

2)b

3)b

4)d

5)d

6)d

7)b

Explanation:

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Answer 2

1. 21

2. Warming effect

3. Water

4. Soil

5. Clay

6. All of these

7. Nitrogen

_______________________

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