JEE Main 2026 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 5 April 2026, Shift 1, Chemistry Q72

Question 72 of 75 in this shift, Chemistry question 22 of 25, Section B.

In an estimation of sulphur by Carius method 0.2 g of the substance gave 0.6 g of

\mathrm{BaSO_4}

. The percentage of sulphur in the substance is ________%. (Given molar mass in g mol

^{-1}

S : 32,

\mathrm{BaSO_4}

: 231)

Official answer

41 or 42

NTA final key.

Chapter: Organic Chemistry: Some Basic Principles and Techniques
Topic: Stoichiometry
Idea tested: Gravimetric Precipitation Analysis

Same idea in other shifts

Asked 4× in all

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8 Apr 2025, Shift 2 · Q7120 mL of sodium iodide solution gave 4.74 g silver iodide when treated with excess of silver nitrate solution. The molarity of the sodium…EasyNumerical value
13 Apr 2023, Shift 2 · Q900.400 g of an organic compound (X) gave 0.376 g of AgBr in Carius method for estimation of bromine. % of bromine in the compound (X) is…EasyNumerical 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 42 of the 174 JEE Main shifts held from 2017 to 2026.