EASY
8th CBSE
IMPORTANT
Earn 100

Gas mainly responsible for greenhouse effect is _____.
(a)Carbon dioxide
(b)Carbon monoxide
(c)Nitrogen
(d)Oxygen

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Important Questions on Pollution of Air and Water
EASY
8th CBSE
IMPORTANT

EASY
8th CBSE
IMPORTANT

EASY
8th CBSE
IMPORTANT

EASY
8th CBSE
IMPORTANT

EASY
8th CBSE
IMPORTANT
Why is preferred as a fuel?

MEDIUM
8th CBSE
IMPORTANT

MEDIUM
8th CBSE
IMPORTANT

EASY
8th CBSE
IMPORTANT
