JEE Main 2026 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 5 April 2026, Shift 2, Chemistry Q72

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

RMgI when treated with ice cold water liberated a gas which occupied 1.4 dm

^3

/g at STP. The gas produced is further reacted with iodine in presence of

\mathrm{HIO_3}

to give compound (X). Compound (X) in presence of Na and dry ether produced compound (Y). Molar mass of compound (Y) is __________ g mol

^{-1}

. (Nearest integer)

Official answer

NTA final key.

Chapter: Haloalkanes and Haloarenes
Topic: Alkanes and Free Radicals
Idea tested: Hydrolysis of Grignard Reagents

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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.