1.

The thickness of Ozone in a column air from the ground to the top of atmosphere is measure in terms of: (A) Dobson unit (B) Arab unit (C) Pascal unit (D) None of these

Answer»

Correct Answer is: (A) Dobson unit 

• The Dobson Unit is a way to describe how much ozone there would be in the column if it were all squeezed into a single layer. 

• The average amount of ozone in the atmosphere is roughly 300 Dobson Units, equivalent to a layer 3 millimetres (0.12 inches) thick—the height of 2 pennies stacked together.



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