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JEE Main Chemistry question

ChemistryHaloalkanes and HaloarenesJEE Main

Dehydrohalogenation of 1,2-dibromobutane with alc. KOH (single equivalent) gives

Answer: (D)

Solution

A single E2 elimination of HBr from the vicinal dibromide CHCHCHBr–CHBr removes one HBr, giving the bromoalkene (vinyl bromide)

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Question ID VK-142541