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Question

Which of the following gases protects us from harmful sun rays?


A

Carbon dioxide

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B

Nitrogen

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C

Ozone

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D

Oxygen

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Solution

The correct option is C

Ozone


Explanation for correct option:

C. Ozone

  • Ozone, or trioxygen, is an inorganic molecule with a chemical formula O3.
  • The ozone layer protects from the harmful effects of the UV radiation from the sun by absorbing it and preventing it from reaching the earth's surface.
  • When an ozone molecule absorbs even low-energy ultraviolet radiation, it splits into an ordinary oxygen molecule and a free oxygen atom.

Hence, the correct option is C i.e. Ozone.


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