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Anomalous Expansion of Water

State True or...

Question

State True or False.
When liquid and its vapours are at equilibrium and the pressure is suddenly decreased, cooling occurs.

A

True

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B

False

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Solution

The correct option is A True
Option (A) is correct.
When liquid and its vapors are at equilibrium and the pressure is suddenly decreased, cooling occurs. When the rate of vaporization is equal to the rate of condensation the number of molecules in the vapor state remains unchanged.

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