Unit 9. People, Development and Environment

UGC NET JRF Paper 1 Free Unit-wise Test Series.

Question (10/10)


Q.10. What is the main cause of acid rain?

(A). Carbon dioxide

(B). Sulfur dioxide and nitrogen oxides

(C). Methane

(D). Ozone


Answer: (B). Sulfur dioxide and nitrogen oxides


Explanation: Acid rain is caused by the release of sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) into the atmosphere, which react with water vapor to form sulfuric and nitric acids. These acids then fall to the ground as precipitation.



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