Question

Which of the followings pair is not present in acid rain (if any one acid in the given pair is not present, then that pair is considered to be not present)-

• A. $H_{2}C{O}_{3}and{H}_{2}S{O}_3$
• B. $HN{O}_{3}and{H}_{2}C{O}_3$
• C. $H_{2}S{O}_{4}and{H}_{3}P{O}_4$
• D. $H_{2}S{O}_{3}and{H}_{3}S{O}_4$

Answer 1

The correct option is C $H_{2}S{O}_{4}and{H}_{3}P{O}_4$

Acid rain is caused due to reaction of water with gaseous oxides present in atmosphere. As oxides of C, N and S are present in the form of $C{O}_2,N{O}_x,S{O}_{2}andS{O}_3$; their corresponding acids are present in acid rain. But $H_{3}P{O}_4$ is absent.