A chemical that acts as a pollutant in the tr | vedclass

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(B) Ozone $(O_3)$ is a gas that plays a dual role in the atmosphere.In the stratosphere,it forms the ozone layer,which absorbs harmful ultraviolet $(U

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$O_3$

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(B) Ozone $(O_3)$ is a gas that plays a dual role in the atmosphere.In the stratosphere,it forms the ozone layer,which absorbs harmful ultraviolet $(UV)$ radiation from the sun,thus acting as a protectant for living organisms.In the troposphere,however,ozone is a secondary pollutant formed by the reaction of nitrogen oxides $(NO_x)$ and volatile organic compounds $(VOCs)$ in the presence of sunlight,where it acts as a harmful chemical pollutant.

$A$ chemical that acts as a pollutant in the troposphere but as a protectant in the stratosphere is:

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