JEE Main Chemistry question

The reaction of acetylene with excess sodium hypochlorite (NaOCl) gives, after double addition/oxidation,

(A)1,2-Dichloroethane
(B)2,2-Dichloroacetaldehyde (dichloroacetaldehyde)Correct
(C)1,2-Dichloroethyne
(D)Trichloroethanol

Answer: (B)

Solution

The first equivalent of HOCl/NaOCl adds across the triple bond and tautomerises to chloroacetaldehyde, ClCHCHO; with excess hypochlorite, a second chlorination occurs at the same carbon

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Question ID VK-142610