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Question

Which one of the following can cause depletion of ozone?

A
H2S
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B
NO
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C
Smoke
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D
Aqua sols
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Solution

The correct options are
A H2S
B NO
H2S and NO, inititates the free radical reaction, which breaks the ozone molecule into oxygen, as

O3O2+[O]

Hence, we can say that H2S and NO causes ozone depletion.

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