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Question

DU is unit for the measurement of

A
volume of ozone
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B
thickness of ozone
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C
thickness of any gas
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D
volume of ozone hole
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Solution

The correct option is B thickness of ozone
Ozone is measured in what are called Dobson units. A Dobson unit of gas is equal to a layer of gas, at the surface of the Earth, with a thickness of one hundredth of a millimeter.The ozone in the atmosphere is about 300 Dobsons.

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