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Which of the following statements about ozone is correct?

1. Stratospheric ozone protects us from UV radiations.
2. Tropospheric ozone protects us from UV radiations.
3. Stratospheric ozone is ‘bad’.
4. Tropospheric ozone is ‘good’.

Correct answer: Stratospheric ozone protects us from UV radiations.

Solution

Stratospheric ozone forms a protective layer that absorbs harmful UV radiation from the sun, preventing it from reaching the Earth's surface. Tropospheric ozone, on the other hand, is a pollutant and harmful to living organisms.

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