JEE Main 2019 — Haloalkanes And Haloarenes Question with Solution
From: JEE Main 2019 (Online) 12th April Evening Slot
Question
An 'Assertion' and a 'Reason' are given below. Choose the correct answer from the following options :
Assertion (A) : Vinyl halides do not undergo nucleophilic substitution easily.
Reason (R) : Even though the intermediate carbocation is stabilized by loosely held p-electrons, the cleavage is difficult because of strong bonding.
Assertion (A) : Vinyl halides do not undergo nucleophilic substitution easily.
Reason (R) : Even though the intermediate carbocation is stabilized by loosely held p-electrons, the cleavage is difficult because of strong bonding.
Choose an option
Show full solutionCorrect option: C
Correct answer
C(A) is correct statement but (R) is a wrong statement
Step-by-step explanation
Due to resonance C - Cl bond strength increses, that is why C - Cl bond do not break easily and don't show nucleophilic substitution reaction easily.
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This is a previous-year question from JEE Main 2019, covering the Haloalkanes And Haloarenes 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.