JEE Advanced 2016 Chemistry question

Mixture(s) showing positive deviation from Raoult's law at 35 °C is(are)

(A)carbon tetrachloride + methanolCorrect
(B)carbon disulphide + acetoneCorrect
(C)benzene + toluene
(D)phenol + aniline

Answer: (A),(B)

Solution

Positive deviation occurs when the A-B interactions are weaker than the A-A and B-B interactions. (A) Non-polar breaks the hydrogen bonds of methanol without replacing them: positive deviation. (B) -acetone interactions are

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Question ID VK-026563