1.

Assertion :- On adding NACl to water its vapour pressure increases. Reason :- Addition of non-volatile solute increases the vapour pressure.

Answer»

If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.

Solution :If a non-volatile solute is ADDED to water its vapour pressure ALWAYS DECREASES. THEREFORE, both assertion and reason are false.


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