Which gas is responsible for ozone layer depletion?

Practice MCQ for SSC, UPSC, RRB Exams

A. CO₂ A.
B. O₃ B.
C. CH₄ C.
D. CFCs D.

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

Chlorofluorocarbons (CFCs) are the primary synthetic chemicals responsible for the depletion of the ozone layer. When released into the atmosphere, CFC molecules drift to the stratosphere, where intense ultraviolet (UV) radiation breaks them down, releasing highly reactive chlorine atoms. These chlorine atoms then act as catalysts, destroying thousands of ozone (O₃) molecules in a chain reaction, which thins the protective ozone layer.
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