JEE Main 2021ChemistryHaloalkanes and HaloarenesEasyMCQ

JEE Main 2021 — Haloalkanes and Haloarenes Question with Solution

JEE Main 2021 (31 Aug Shift 2)

Question

The major product of the following reaction is :

Choose an option

Show full solutionCorrect option: B
Correct answer
B

Step-by-step explanation

NaOH and C2H5OH is alcoholic NaOH which is used for dehydrohalogenation of alkenes. This beta elimination is anti-elimination and Saytzeff alkene (more stable) is major product. In the given reaction, more stable conjugated alkene is formed as major product.

Note : There is ambiguity in answer given by NTA which is 4.

 

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About this question

This is a previous-year question from JEE Main 2021, 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.