Question

Acid rain occurs due to atmospheric pollution of:

• A. $S{O}_2$
• B. ${NH}_3$
• C. $C{O}_2$
• D. $N_{2}O$

Answer 1

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

Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low $pH$).

Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.

$S{O}_2+O_3\to S{O}_3+O_2$

$S{O}_3+H_{2}O\to H_{2}S{O}_4$

$N_2{O}_5+H_{2}O\to 2HN{O}_3$

Option A is correct.