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  4. Ozone is formed in the upper atmosphere from oxygen by the action of

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Q. Ozone is formed in the upper atmosphere from oxygen by the action of

KEAMKEAM 2003Environmental Chemistry

Solution:

Ozone is fanned in the upper atmosphere from oxygen by the action of ultraviolet rays. Ozone can absorb UV light to reform oxygen. Thus, the ozone layer acts as a screen and prevents the harmful UV radiations from reaching the surface of earth.