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Consider the following

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 ?

(a)

1, 2 and 3

(b)

2 and 4 only

(c)

4 only

(d)

1, 3 and 4

Explanation

Option (b) is correct: Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and they react with water, oxygen and other chemicals to form sulfuric and nitric acids.