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Question

Pressure exerted by vapour in thermodynamic equilibrium with solid or liquid is called :

A
liquid pressure
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B
solid pressure
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C
vapour pressure
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D
none of the above
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Solution

The correct option is C vapour pressure
The pressure exerted by vapour in thermodynamic equilibrium with solid or liquid is called vapour pressure. A solid or liquid is always in equilibrium with its vapour.

The equilibrium vapour pressure is an indication of a liquid's evaporation rate.

Hence, option C is correct.

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