How does atmospheric pressure decrease with increase in temperature?

Due to air expansion

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Due to decrease in density

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Both

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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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With decrease in atmospheric pressure, the rate of transpiration will

(a) increase (b) decrease rapidly

The rate of transpiration increases with the decrease in atmospheric pressure.

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