JEE Main · 2022 · 26 Jun 2022 · Shift 1 · Environmental Chemistry

Polar stratospheric clouds facilitate the formation of :

Answer: (B)

Solution

Polar stratospheric clouds (PSCs) provide surfaces on which heterogeneous reactions occur. They facilitate the hydrolysis of chlorine nitrate (

ClONO_{2}

) to form hypochlorous acid (HOCl):

ClONO_{2} (g) + H_{2} O (g) \to HOCl (g) + HNO_{3} (g)

This HOCl subsequently photolyzes to release chlorine radicals that catalyze ozone depletion.

JEE Main · 2022 · 26 Jun 2022 · Shift 1 · Single correct option