Home Chemistry Enviromental Chemistry ( Not In Syllabus ) Gaseous Air Pollutants Ozone in the stratosphere is deleted by :
Chemistry Enviromental Chemistry ( Not In Syllabus ) Gaseous Air Pollutants Single Correct MCQ
Published on: August 13, 2026

Ozone in the stratosphere is deleted by :

A
CF2Cl2
B
C7F16
C
C6H6Cl6
D
C6F6

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Text Solution

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The correct answer is:
A

Chlorofluorocarbons (CFCs or freons like CF2Cl2) are responsible for depletion of the ozone layer in the upper strata of atmosphere. They are stable and inert compounds. They absorb UV rays and break down liberating free atomic chlorine which causes depletion of ozone through free radical reaction.

+ O3 + O2

+ O3 + 2O2

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