Assertion:Molecular mass of KCl calculated on the basis of colligative properties will be lower than the normal molecular mass.
Reason : Experimentally determined molar mass of always lower than the true value .

Options

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

Answer

C

Explanation

KCl undergoes dissociation in solution , hence observed molar mass will be lower.Experimentally determined molar mass can be higher or lower depending upon whether solute undergoes dissociation or association.