Concentration of ozone in troposphere is _______.

0.05 ppm

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0.1 ppm

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1.5 ppm

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10.0 ppm

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Solution

The correct option is A 0.05 ppm
Ozone is a reactive gas that is present in two layers of the atmosphere, the stratosphere and the troposphere up to 15km. In the troposphere near the Earth's surface, the natural concentration of ozone is about 0.02-0.05 ppm.
Hence, the correct answer is option A.

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