Question

Identify the pollutant gases which are responsible for the discolouration of marbles in the Taj Mahal.

• A. $S{O}_{2}andN{O}_2$
• B. $S{O}_{2}and{O}_3$
• C. $C{H}_{4}andN{O}_2$
• D. $O_{3}andC{O}_2$

Answer 1

The correct option is A $S{O}_{2}andN{O}_2$

Industries present near the Taj Mahal produce a lot of $N{O}_2$ and $S{O}_2$ gases which react with water, oxygen and other gases to form sulphuric acid and nitric acid. These gases are responsible for acid rain and the subsequent discolouration of marbles.