Question

Acid rain is caused due to increase in concentration of (in atmosphere)

• A. $S{O}_2$ and $N{O}_2$
• B. CO and $C{O}_2$
• C. CO and $S{O}_3$
• D. $O_3$ and dust

Answer 1

The correct option is A $S{O}_2$ and $N{O}_2$

Acid rain is rainfall and other forms of precipitation with a pH less than 5. Acid rain is caused by large scale emission of acidic gases into the atmosphere from thermal power plants, industries, and automobiles. The common ones are sulphur dioxide, nitrogen oxides, volatile organic carbons and hydrogen chloride. These oxides combine with water to form acids.

So, the correct answer is option A.