| 1. Oxides of sulphur |
| 2. Oxides of nitrogen |
| 3. Oxides of carbon |
A) 1 and 2
B) 1 and 3
C) Only 2
D) 1, 2 and 3
Correct Answer: B
Solution :
Acid rain is a result of air pollution. Some gases especially nitrogen oxides and sulphur dioxide react with the tiny droplets of water in clouds to form sulphur and nitric acids. The rain from these clod) then falls as very weak acid which is known as ??acid rain".
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