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Radioactivity

The ultraviol...

Question

The ultraviolet radiations in the stratosphere are absorbed by

A

Ozone

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B

Oxygen

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C

Carbon dioxide

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D

Sulphur dioxide

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Solution

The correct option is B Ozone
Ozone layer or shield is present in the stratosphere. It is also called as ozonosphere. Ozonosphere lies at an altitude of 23 to 25 km over the equator and at slightly lower altitude elsewhere. Ninety percent of atmospheric ozone is present in the ozonosphere. Ozone found in the stratosphere is useful for life on earth as it protects the earth from harmful ultra-violet rays and other radiations.

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Q. UV radiations in the stratosphere are absorbed by

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Reason(R): Ozone present absorbs ultraviolet radiation which is converted into heat.

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