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Question

Atmospheric pressure decreases mainly due to:

A
Increase in Temperature of the air
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B
Increase in moisture of the air
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C
Both
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D
None
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Solution

The correct option is D Both
Atmospheric pressure decreases mainly due to
i) increase in temperature of air
ii)increase in moisture of air
In the first case,as the air expands due to heat, its density decreases followed by decrease in pressure.

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