JEE Main 2024 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 29 January 2024, Shift 1, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

A solution of

\mathrm{H_2SO_4}

is 31.4%

\mathrm{H_2SO_4}

by mass and has a density of 1.25g/mL. The molarity of the

\mathrm{H_2SO_4}

solution is ________ M (nearest integer) [Given molar mass of

\mathrm{H_2SO_4}

= 98g mol

^{-1}

]

Official answer

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Molarity Calculation

Same topic in other shifts

All Mole Concept questions

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5 Apr 2026, Shift 1 · Q54What is the mole fraction of water in 10% by weight (w/w) of aqueous urea solution? [Given: Molar mass of H, O, C and N are 1, 16, 12 and…EasySingle correct
6 Apr 2026, Shift 1 · Q51An oxide of iron contains 69.9% iron, its empirical formula, is: (Given : Molar mass of Fe and O are 56 and 16 g mol $^{-1}$ respectively.)EasySingle correct
6 Apr 2026, Shift 2 · Q51Which of the following contain the same number of atoms ? (Given : Molar mass in g mol $^{-1}$ of H, He, O and S are 1, 4, 16 and 32…EasyOther

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.