JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 26 July 2022, Shift 2, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

A 100 mL solution of

\mathrm{CH_3CH_2MgBr}

on treatment with methanol produces 2.24 mL of a gas at STP. The weight of gas produced is ________ mg. [nearest integer]

Official answer

NTA final key.

Chapter: Alcohols, Phenols and Ethers
Topic: Alkanes and Free Radicals
Idea tested: Alkane Synthesis via Grignard Protonation

Same idea in other shifts

Asked 3× in all

27 Aug 2021, Shift 1 · Q43In the following sequence of reactions the P is : [ring structure with Cl drawn] + Mg $\xrightarrow[\text{ether}]{\text{dry}}$ [ A ]…EasyDiagram basedHas a figure
31 Aug 2021, Shift 2 · Q43For the following sequence of reactions, the correct products are : [benzene ring drawn with alternating double bonds] 1. Br2/Fe/ $\Delta$ …MediumDiagram basedHas a figure

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.