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Question: Which of the following is responsible for depletion of ozone in upper strato of the atmosphere-...

Which of the following is responsible for depletion of ozone in upper strato of the atmosphere-

A

Polyhalogens

B

Ferrocene

C

Fullerenes

D

Freons

Answer

Freons

Explanation

Solution

freon's or chlorofluro carbon (CFCS) are responsible for depletion of ozone.

CF2Cl2(g) + hn ¾¾® C˙l(g)+C˙ClF2( g)\dot { \mathrm { C } } \mathrm { l } _ { ( \mathrm { g } ) } + \dot { \mathrm { C } } \mathrm { ClF } _ { 2 ( \mathrm {~g} ) }

(Free radical)

+ O3(g) ¾¾® ClO(g)\mathrm { ClO } _ { ( \mathrm { g } ) } + O2(g)

ClO + Og ¾¾® + O2