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Q.

Which of the following gas/es protects us from ultraviolet rays?


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a

Oxygen

b

Ozone

c

Carbon Dioxide

d

Nitrogen 

answer is B.

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Detailed Solution

Ozone protects us from ultraviolet rays.
Ozone protects the earth from harmful ultraviolet radiation. It is present in the stratosphere. It absorbs a portion of the sun’s radiation and prevents it from reaching the earth’s surface. So. It absorbs the UV rays from the sun, which have a lot of harmful effects.
              
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