Assertion (A): CFCs deplete the ozone layer.

Reason (R): CFCs are used as refrigerants and in fire extinguishers.



Chlorofluorocarbons (CFCs ), which are used as refrigerants and in fire extinguishers , deplete the ozone layer by rising into the stratosphere and releasing chlorine atoms which react with ozone.


  • Assertion is true.
  • Reason is true.
  • Reason is the correct explanation of assertion.

So, the correct answer is (a).

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo