Consider the following:
1. Nitrous acid
2. Nitric acid
3. Sulfuric acid
4. Hydrochloric acid
Which among the above are common in Acid rains?

Answer: [D] Only 1, 2 & 3

Acid rain results from by- products of industry and the internal combustion engine, nitrogen and sulfur. The common acids in acid rain are nitrous acid, nitric acid, and sulfuric acid.

This question is a part of GKToday's Integrated IAS General Studies Module