Chemistry · Solutions and Colligative Properties

JEE Main 2024 — 27 January, Shift 1 — Question 61

A solution of two miscible liquids showing negative deviation from Raoult's law will have :

  1. Option A:

    increased vapour pressure, increased boiling point

  2. Option B:

    increased vapour pressure, decreased boiling point

  3. Option C:

    decreased vapour pressure, decreased boiling point

  4. Option D:

    decreased vapour pressure, increased boiling point

    Correct

Answer: D

Step-by-step solution

Solution with negative deviation has

PA<PA0XA\mathrm{P}_{\mathrm{A}}<\mathrm{P}_{\mathrm{A}}{ }^{0} \mathrm{X}_{\mathrm{A}}

PB<PB0XB\mathrm{P}_{\mathrm{B}}<\mathrm{P}_{\mathrm{B}}{ }^{0} \mathrm{X}_{\mathrm{B}}

If vapour pressure decreases so boiling point increases

Solution figure

Answer key and solution verified before publishing.

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Exam
JEE Main 2024
Subject
Chemistry
Chapter
Solutions and Colligative Properties
Topic
Liquid in Liquid Solutions (Raoult's Law)
A solution of two miscible liquids showing negative deviation from… | JEE Main 2024 PYQ with Solution · DhiX AI