JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 28 June 2022, Shift 1, Chemistry Q90

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

In the estimation of bromine, 0.5 g of an organic compound gave 0.40 g of silver bromide. The percentage of bromine in the given compound is ________% (nearest integer) (Relative atomic masses of Ag and Br are 108u and 80u, respectively).

Official answer

NTA final key.

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

Same idea in other shifts

Asked 6× in all

4 Apr 2026, Shift 2 · Q75In sulphur estimation, $2.0\times10^{-3}$ mol of an organic compound (X) (molar mass 76 $\mathrm{g\ mol^{-1}}$ ) gave 0.4813 g of barium…EasyNumerical value
5 Apr 2026, Shift 1 · Q72In 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…EasyNumerical value
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
26 Aug 2021, Shift 2 · Q59In the sulphur estimation, 0.471 g of an organic compound gave 1.44 g of barium sulfate. The percentage of sulphur in the compound 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.