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Question

Depletion of ozone layer is caused by

A
Freon
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B
Alkane
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C
Grignard reagent
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D
All of these
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Solution

The correct option is A Freon
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants and foam-blowing agents (chlorofluorocarbons Freon ,(CFCs), HCFCs, halons), referred to as ozone-depleting substances (ODS).

hence A is correct option

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