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Question
Give reason for the following:
The formation of ozone involves a chemical reaction called photolysis.
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Solution
With the help of UV rays
O2 molecule breaks into two oxygen atoms called photolysis.
\[\ce{O2 ->[UV][light] [O] + [O]}\]
Now more of O2 molecule combine with [O]
O2 + [O] → O3 ozone
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