MHT CET Chemistry question

Identify the set of reagent/reaction conditions 'X' and 'Y' in the following set of transformations : \mathrm{CH_3-CH_2-CH_2Br \xrightarrow{X} Product \xrightarrow{Y} CH_3-CH(Br)-CH_3}

(A)X = Dilute aqueous NaOH, Y = HBr
(B)X = Alcoholic NaOH, Y = HBrCorrect
(C)X = Dilute aqueous NaOH, Y =
(D)X = Alcoholic NaOH, Y =

Answer: (B)

Solution

Alcoholic NaOH dehydrohalogenates 1-bromopropane to propene, and HBr adds to propene by Markovnikov rule to give 2-bromopropane;

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Question ID VK-043341