Which of the following azeotropic solution has the `b.p.` less than `b.p.` of the constituents `A` and `B` ?

Options

A. `CHCl_(3)` and `CH_(3)COCH_(3)`
B. `CS_(2)` and `CH_(3)COCH_(3)`
C. `CH_(3)CH_(2)OH` and `CH_(3)COCH_(3)`
D. `CH_(3)` and `CS_(2)`

Answer

C

Explanation

Mixture of `CH_(3)CH_(2)OH` and CH_(3)COCH_(3)` shows positive deviation from Raoult's law, so vapour pr. Increases and b.p decreases.