____ damage(s) the ozone layer of the atmosphere.

Helium

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Oxides of nitrogen and sulphur

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Hydrogen gas

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Chlorofluorocarbons

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Solution

The correct option is D Chlorofluorocarbons
Chlorofluorocarbons (CFCs) which are used in refrigerators, air conditioners and aerosol sprays are considered as pollutants. When CFCs escape into the atmosphere, they convert ozone $(O_{3})$ to oxygen molecules $(O_{2})$ and thus reduce the thickness of the ozone layer, which protects the Earth from the UV rays of the Sun.

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