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Question

Which of the following are main responsible for ozone depletion?

A
Chlorofluorocarbons
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B
Hydrocarbons
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C
Carbon monoxide
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D
Carbon dioxide
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Solution

The correct option is A Chlorofluorocarbons
  • Ozone depletion occurs when chlorofluorocarbons (CFCs) present in aerosols and refrigerants are released into the stratosphere.
  • Ultraviolet radiations from the sun break these CFCs molecules and release the chlorine atoms.
  • Chlorine atom reacts with the ozone (O3) molecules and starts the ozone destruction cycle.
  • So, the correct answer is 'Chlorofluorocarbons'.

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