Question

(B) Fill in the blanks by selecting appropriate option. (4)

(1) . . . . . . . . . gas is responsible for global warming. (Oxygen, Nitrogen, Carbon

dioxide)

(2) …………………….. gas is present in acid rain. (Biogas, Sulphur dioxide, Carbon dioxide)

(3) . . . . . . . . . fuel is less polluting. ( LPG, Dung cake, Wood.)

(4) Plastic is a …………………. substance and should be used wisely. (non biodegradable,

biodegradable, biological)​

Answer 1

1. carbon dioxide

2.carbon dioxide

3.LPG

4.Non biodegradable

Answer 2

Answer:

1) Carbon dioxide

2) Sulfur dioxide

3)

4) Non-biodegradable

Explanation:

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