JEE Main 2020 — Haloalkanes And Haloarenes Question with Solution
From: JEE Main 2020 (Online) 8th January Morning Slot
Question
The decreasing order of reactivity towards dehydrohalogenation (E1) reaction of the following compounds is :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: B
Correct answer
BD B C A
Step-by-step explanation
Dehydrohalogenation of the given halides by E1
mechanism is decided by the stability of
carbocation formed in the first step. The
correct decreasing order of the given halides
towards dehydrohalogenation by E1 mechanism
is
D B C A
D B C A
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This is a previous-year question from JEE Main 2020, 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.