1.

Assertion : A mixture of cyclohexane and ethanol shows -ve deviation from Raoult's law . Reason : Cyclohexane reduces the intermolcular attraction between ethanol molecules.

Answer»

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

Solution :The given explaination is correct and a reduction in molecular attraction will increase vaporisation NATURE and lead for HIGHER vapour prssure than that calculated by Raoult's law .Thus ,mixture will SHOWS positive deviation.


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