1.

Assertion. If a liquid solute more volatile than the solvent is added to a solvent, the vapour pressure of the solution may increase, i.e., p_(s) gt p^(@). Reason. In thepresence of the more volatile solute, only the solute will form the vapours and solvent will not.

Answer»

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

Solution :Correct R. Both solute and solvent will form the VAPOUR but vapour PHASE will be richer in solute.


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