JEE Main 2026 · ChemistryNumerical answerNumerical valueHardMulti-step

JEE Main 2 April 2026, Shift 1, Chemistry Q72

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

Consider the isomers of hydrocarbon with molecular formula

\mathrm{C_5H_{10}}

. These isomers do not decolourise

\mathrm{KMnO_4}

solution. These isomers are subjected to chlorination with chlorine in presence of light to give monochloro compounds. The total number of monochloro compounds (structural isomers only) formed is __________.

Official answer

NTA final key.

Chapter: Hydrocarbons
Topic: Structural Isomerism
Idea tested: Enumeration of Structural Isomers

Same topic in other shifts

All Structural Isomerism questions

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18 Mar 2021, Shift 1 · Q42Compound with molecular formula $\mathrm{C_3H_6O}$ can show :EasySingle correct

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.