Air Pollution

Environment and Ecology

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Consider the following: 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide

Excess of which of the above in the environment is/are cause(s) of acid rain?

This questions was previously asked in

UPSC CSP Previous Year Paper (2022)

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1, 2 and 3

2 and 4 only

4 only

1, 3 and 4

Explanation:

Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials before falling to the ground.

By: Parvesh Mehta

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