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Question

This gaseous chemical which consists of three atoms is poisonous yet vital to human beings, as it protects from the harmful ultra-violet radiation from the Sun. Name this gas.

A
Nitrous oxide
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B
Ozone
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C
Carbon dioxide
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D
Water vapour
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Solution

The correct option is A Ozone
  • Ozone is a chemical and consists of 3 oxygen atoms. It is important for the survival of plants and animals on planet Earth.
  • There is a portion of the stratosphere with a high concentration of ozone, called the ozone layer.
  • This layer filters out damaging ultraviolet radiation from the Sun and acts like a sun screen.

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