Question

Acid rain occurs due to atmospheric pollution of:
A: $S{O_2}$
B: $N{H_3}$
C: $C{O_2}$
D: ${N_2}O$

Answer 1

When some toxic compounds present in air come in contact with rain water more acidic pollutants are formed. This is called acid rain. Pollutants are the substances which are harmful for the environment and are the main cause of pollution.

Complete step by step answer:
Pollution is the presence of contaminants into the natural environment that cause adverse changes in the environment. It can take the form of chemical substance or energy, like, heat, light or noise. The components that cause pollution are called pollutants. These substances can be either foreign substances or energies or naturally occurring contaminants. Acid rain is caused by the oxides of sulphur and nitrogen. Sulphur dioxide present in the atmosphere reacts with oxygen and water to form sulphuric acid which results in acid rain. Reaction associated is written below
$S{O_2} + \dfrac{1}{2}{O_2} + {H_2}O\xrightarrow[{}]{}{H_2}S{O_4}$
This acid rain causes huge loss of environment such as, it damages the greenery, trees, biologically important herbs and shrubs. It completely burns them and also nearby ponds and lakes also get adversely affected by this as it changes the level of water which affects the biodiversity of that pond or lake causing aquatic life to die.
Acid rain caused by sulphur dioxide also affects the precious monuments for example: One of the seven wonders of the world, The Taj Mahal gets a serious effect as its white marble starts turning yellow in color. This acid rain reacts with calcium carbonate to make that yellowish appearance.

So, the correct answer is Option A .

Note:
Sulphur dioxide is not acid rain. It is the reactant that combines with water in the atmosphere to form sulphuric acid that causes acid rain. Sulphur dioxide is that toxic gas which is responsible for the smell of burnt matc