Which one of the following is mainly responsible for depletion of ozone layer?
A
Methane
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B
Carbon dioxide
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C
Water
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D
Chlorofluorocarbon
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Solution
The correct option is D Chlorofluorocarbon Ozone layer depletion is due to the release of CFCs which are also known as freons.
Released CFCs come in contact with the normal atmospheric gases and eventually reach the stratosphere where they cause depletion in ozone layer. CF2Cl2(g)UV⟶∙Cl(g)+∙CF2Cl(g) ∙Cl(g)+O3(g)→∙ClO(g)+O2(g) ∙ClO(g)+O(g)→∙Cl(g)+O2(g)