Which of the following is used in refrigerator and air conditoners and is a source of Cl $_{2}$ ?

Benzopyrene

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Freon

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Benzene

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C H_{4}

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Solution

The correct option is C Freon
Chlorofluorocarbons or chlorofluoromethane or freon or aerosols are the chemicals used as refrigerants, propellants and solid plastic foams. These chemicals are also released as aerosols by jet flying at high altitudes. Along with nitrogen oxides, chlorofluorocarbons react with ozone of ozonosphere and deplete the same.
Chlorofluorocarbons or freons release active chloride, which directly reacts with ozone and breaks it into oxygen and more of chloride or hypochlorite ion. Hole in the ozone shield over antarctic region has widened due to the use of these chemicals. The depletion of ozone can increase the amount of ultraviolet radiations reaching the earth.
So, the correct answer is 'Freon'

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