RRaahUPSC
2013 · EnvironmentPrevious Year Question
Q80.
Acid rain is caused by the pollution of environment by
A. carbon dioxide and nitrogen
B. carbon monoxide and carbon dioxide
C. ozone and carbon dioxide
D. nitrous oxide and sulphur dioxide
Answer

D

Explanation

Sulphur dioxide and nitrogen oxides both combine with water in the atmosphere to create acid rain. SO2 forms sulphurous/sulphuric acid; NOx forms nitric acid when dissolved in rainwater.
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