Question

Acid rain is caused due to which gas?

• A. $N{O}_3$
• B. $S{O}_2$
• C. $S{O}_3$
• D. $C{O}_2$

Answer 1

Answer: (B)

$S{O}_2$

The main chemicals in air pollution that create acid rain are sulfur dioxide (SO${}_2$) and nitrogen (NO${}_2$). Sulfur dioxide and nitrogen oxides react with water, oxygen, and oxidants and forms sulfuric acid and nitric acid. Sunlight increases the rate of most of these reactions. Rainwater mixed with sulphuric acid and nitric acid is called as acid rain.