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Assertion: UV radiation causes photo dissociation of ozone into $\mathrm{O}_2$ and $\mathrm{O}$, thus causing damage to the stratospheric ozone layer.
Reason : Ozone hole is resulting in global warming and climate change.
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Reason : Ozone hole is resulting in global warming and climate change.
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The correct answer is:
Ifboth assertion and reason are true but reason is not the correct explanation of assertion.
$\mathrm{O}_3 \stackrel{\mathrm{UV} \text { (sun) }}{\longrightarrow} \mathrm{O}_2+\mathrm{O}$
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