JEE Main Chemistry question

A solution of two liquids boils at a temperature more than the boiling point of either of them. Hence, the binary solution shows [K CET 2003]

(A)Negative deviation from Raoult's lawCorrect
(B)Positive deviation from Raoult's law
(C)No deviation from Raoult's law
(D)Positive or negative deviation from Raoult's law depending upon the composition

Answer: (A)

Solution

A solution boiling higher than either pure component (a maximum-boiling azeotrope) has a lower-than-ideal vapour pressure, which is the

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Question ID VK-142992