Question

Asssertion : Azeotropic mixtures are formed only by non-ideal solutions and they may have boiling points either greater than both the components or less than both the compounds.
Reason : The composition of the vapour phase is same as that of the liquid phase of an azeotropic mixture.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both the assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If assertion is reason both are false.

Answer 1

Correct Answer - B
Non-ideal solutions with positive deviation i.e,having more vapour pressure than expected ,boil at lower temperature while those with negative devaition boil at higher temperature than those of the components.