Which gas commonly used in refrigerators and air conditioners was historically linked to ozone layer depletion?
A
Carbon dioxide
B
Chlorofluorocarbons
C
Methane
D
Nitrogen
Correct Answer: Option B — Chlorofluorocarbons
Explanation:
Chlorofluorocarbons CFCs once widely used as refrigerants were linked to ozone layer depletion as they release chlorine atoms that break down ozone molecules in the stratosphere.