JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 6 April 2023, Shift 2, Chemistry Q84

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

Consider the following pairs of solution which will be isotonic at the same temperature. The number of pairs of solutions is / are ___________. A. 1 M aq. NaCl and 2 M aq. urea B. 1 M aq.

\mathrm{CaCl_2}

and 1.5 M aq. KCl C. 1.5 M aq.

\mathrm{AlCl_3}

and 2 M aq.

\mathrm{Na_2SO_4}

D. 2.5 M aq. KCl and 1 M aq.

\mathrm{Al_2(SO_4)_3}

Official answer

NTA final key.

Chapter: Solutions
Topic: Colligative Properties
Idea tested: Isotonic Solutions

Same idea in other shifts

Asked 4× in all

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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 108 of the 174 JEE Main shifts held from 2017 to 2026.