JEE Main201910 Jan 2019Morning ShiftChemistryHydrocarbonsActual

The major product of the following reaction is:

Correct answer

Step-by-step solution

Addition of alc. KOH to haloalkanes follows the Saytzeff rule which points towards greater stability. Saytzeff's rule implies that elimination reactions favour formation of alkene with greater number of substituents. Not only that, but it also gives the molecule an extended conjugate system which further enhances its stability.

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