A) Hydrogen
B) Carbon dioxide
C) Sulphur dioxide
D) Carbon monoxide
Correct Answer: A
Solution :
Hydrogen is not a pollutant whereas sulphur dioxide and carbon monoxide are the main constituents of atmosphere. \[C{{O}_{2}}\]is not a pollutant at normal concentration but at higher concentration \[C{{O}_{2}}\] cause greenhouse effect.You need to login to perform this action.
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