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Q.
Which of the following gases does not cause acid rain?
Chhattisgarh PMTChhattisgarh PMT 2009
Solution:
The Acid rain is caused by large scale emission of nitrogen oxides $ (NO_{x}),\,SO_{2}, $ volatile organic carbons (VOCs), some amount of carbon mono-oxide and $HCl$ from thermal power plants, industries and automobiles. Methane is a green-house gas.