JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 8 April 2023, Shift 2, Chemistry Q84

Question 84 of 90 in this shift, Chemistry question 24 of 30, Section B.

If the boiling points of two solvents X and Y (having same molecular weights) are in the ratio 2:1 and their enthalpy of vaporizations are in the ratio 1:2, then the boiling point elevation constant of X is

m

times the boiling point elevation constant of Y. The value of m is ____________ (nearest integer).

Official answer

NTA final key.

Chapter: Solutions
Topic: Colligative Properties
Idea tested: Thermodynamic Derivation of Ebullioscopic Constant (Kb)

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.