JEE Main 2024 · ChemistryMultiple choiceSingle correctEasyCalculation

JEE Main 6 April 2024, Shift 1, Chemistry Q61

Question 61 of 90 in this shift, Chemistry question 1 of 30, Section A.

The density of 'x' M solution ('x' molar) of NaOH is 1.12 g mL

^{-1}

, while in molality, the concentration of the solution is 3 m (3 molal). Then

x

is (Given : Molar mass of NaOH is 40 g/mol)

(1)3.5
(2)3.8
(3)3.0Official answer
(4)2.8

Official answer

Option 3

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Molarity and Molality Interconversion

Same idea in other shifts

Asked 5× in all

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30 Jul 2022, Shift 2 · Q51The density of 4 molal solution of NaOH is 1.160 g $\mathrm{mL^{-1}}$ . The molarity of the solution is ________ M. (Given : Molar mass of…MediumNumerical value
26 Aug 2021, Shift 1 · Q51An aqueous KCl solution of density 1.20 g mL $^{-1}$ has a molality of 3.30 mol kg $^{-1}$ . The molarity of the solution in mol L $^{-1}$ is…MediumNumerical value

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.