2-Bromopropane is heated with alcoholic $KOH$ . The main product is

Apropyne
Bpropan-1-ol
Cpropene
Dpropan-2-ol

Answer: C

Alcoholic KOH contains the strongly basic ethoxide ion (and little water), which brings about dehydrohalogenation by E2: loss of HBr gives propene. Aqueous KOH would give mainly substitution.

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2-Bromopropane is heated with alcoholic KOH. The main product is

Answer: C

More questions on E2 mechanism and anti-periplanar requirement

2-Bromopropane is heated with alcoholic $KOH$ . The main product is