JEE Main 2013 — Haloalkanes and Haloarenes Question with Solution
JEE Main 2013 (25 Apr Online)
Question
In nucleophilic substitution reaction, order of halogens as incoming (attacking) nucleophile is:
The order of halogens as departing nucleophile should be :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Since the leaving group breaks away as a base, it is easier to displace weaker bases as compared to stronger bases. Thus less basic the substituent, the more easily it is displaced.
Since the basic strength of the given groups is in order.
Thus the order of halogen leaving groups is
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This is a previous-year question from JEE Main 2013, 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.