An optically active alkyl halide 
is heated with alc. KOH, giving an alkene
A
Butan-2-one
B
as the major product. Compound adds 
to form a vicdibromide Butan-1-al
to form a vicdibromide Butan-1-al C
. Treatment of with alc. 
yields a gaseous compound But-2-yne
yields a gaseous compound But-2-yne
D
. Hydration of 1 mol of with 
at 333 K adds 18 g of water and produces (E). The IUPAC name of (E) is:
Butan-2-ol
at 333 K adds 18 g of water and produces (E). The IUPAC name of (E) is: Butan-2-ol
Text Solution
Verified by ExpertsThe correct answer is:
A
Optically active 
sec-butyl bromide 
with alc. KOH gives 2 - butene 
addition 
dibromobutane . Double dehydrohalogenation with alc. 
→ but-2-yne (gas). Acidic 
hydration of an alkyne adds 
(18 g) to give the ketone butan-2-one (E).
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