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Question

CFC are not recommended to be used in refrigerators because they
  1. Increase temperature
  2. Deplete ozone
  3. Affect human body
  4. Affect environment

A
Increase temperature
B
Affect human body
C
Deplete ozone
D
Affect environment
Solution
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Ozone depleting substances (ODS) are substances, which react with ozone present in the stratosphere and destroy the same. The major ODS are chlorofluorocarbons (14 percent of total depletion), nitrogen oxides (3 to 5 percent of total depletion), sulphur dioxides, halon, carbon tetrachloride, methane, methyl chloroform etc.

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