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Question

In the following reaction: 
C2H2HgSO4/H2SO4−−−−−−−−333 K(X)CH3CHO What is (X) ?
  1. CH3CH2OH
  2. CH2=CHOH
  3. CH3CH2CHO
  4. CH3OCH3


Solution

The correct option is B CH2=CHOH
Like alkanes and alkenes, alkynes are also immiscible in water and do not react with water. However, one molecule of water adds to an alkyne on warming with HgSO4 and dil. H2SO4 at 333 K to form a carbonyl compound.

C2H2HgSO4/H2SO4−−−−−−−−333 K(CH2=CHOH)CH3CHO

So, the correct answer will be option (b).

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