Question

# All are particulate pollutant except

A

Soot

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B

Dust

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C

Smoke

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D

Ozone

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Solution

## The correct option is D OzonePollutants: Agents that bring about such an undesirable change are called as pollutants.Particulate pollutants: Particulate pollutants are solid particles in the air that cause pollution. Explanation for incorrect option:Out of the given options, Soot, dust, and smoke are the particulate pollutants as all these contain solid pollutant particles. Explanation for correct option:ozone is a gaseous pollutant.Ozone $\left({\mathrm{O}}_{3}\right)$ is found in the upper part of the atmosphere called the stratosphere, and it acts as a shield absorbing harmful ultraviolet radiation from the sun.Ground-level ozone acts as a pollutant and is harmful to human health and the environment.Hence, the correct option is (D).

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