1.

Assertion (A) : The vapour phase is always richer in the component which is less volatile.Reason (R) : The relative lowering of the vapour pressure of a solution is proportional tomole fraction of the solvent.

Answer»

Both ASSERTION (A) and Reason (R) are correct STATEMENTS, and Reason (R) is the correct explanationof the Assertion (A).
Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanationof the Assertion (A).
Assertion (A) is correct, but Reason (R) is incorrect statement,
Assertion (A) is incorrect, but Reason (R) is correct statement.

Answer :D


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