Why are cholorofluorocarbons supposed to be responsible for depletion of ozone layer? Explain.

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Solution

Chlorofluorocarbons are inert, highly stable, colourless and odourless chemicals extensively used in refrigerators and air conditioners. Chlorofluorocarbons are nontoxic in the troposphere, but they slowly diffuse into the stratosphere where, under the influence of high energy radiation, they break to produce chlorine atom. Chlorine atoms react with ozone in the stratosphere to produce chlorine monoxide and $O_{2}$ . Chlorine monoxide reacts with atomic oxygen to regenerate chlorine. A single chlorine atom can destroy about 1,00,000 ozone molecules.

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Which of the is responsible for depletion of ozone layer? Options are :-

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Chloroflurocarbons are responsible for the depletion of the ozone layer. Which one of the following reacts with ozone to form oxygen?

Q74) How are Green House Effect and Ozone layer depletion related?

i) Greenhouse effect causes ozone layer depletion

ii) Ozone layer depletion causes greenhouse effect.

iii) There is no relation between the two phenomena.

iv) Chlorofluorocarbons are one of the culprits in both the cases.

Which of the above statements are true?

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