JEE Main 2019 — Hydrocarbons Question with Solution
From: JEE Main 2019 (Online) 8th April Evening Slot
Question
Polysubstitution is a major drawback in:
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Show full solutionCorrect option: B
Correct answer
BFriedel Craft's alkylation
Step-by-step explanation
Polysubstitution is a major drawback of Friedal–Craft alkylation.
–CH3 group in highly activating group due to +H effect, so after first time addition of -CH3 group in benzene ring the reactivity of the benzene ring increases.
–CH3 group in highly activating group due to +H effect, so after first time addition of -CH3 group in benzene ring the reactivity of the benzene ring increases.
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This is a previous-year question from JEE Main 2019, covering the Hydrocarbons chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.