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Question

Ozone depletion over Antarctica is due to the:

A
formation of chlorine nitrate ((ClONO2))
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B
formation of HCl
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C
formation of HOCl and Cl2 which are converted back into reactive Cl atoms
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D
None of the above
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Solution

The correct option is C formation of HOCl and Cl2 which are converted back into reactive Cl atoms
HOCl and Cl2 are formed over Antarctica.These are converted back into reactive Cl atoms which start the chain reaction with O3 causing its depletion.

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