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प्रश्न
Which one of the following is measured in Dobson units (DU)?
विकल्प
Thermal pollution of water
Thickness of ozone in a column of air
Biochemical Oxygen Demand
Biomagnification of DDT and Mercury
MCQ
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उत्तर
Thickness of ozone in a column of air
Explanation:
1 DU = 0.01 mm thickness of ozone if compressed at STP. It measures the thickness of ozone layer.
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