JEE Main Chemistry question

Ethylidene dichloride, on treatment with aq. KOH, gives:

(A)Correct
(B)Ethylene glycol,
(C)
(D)Glyoxal,

Answer: (A)

Solution

Ethylidene dichloride, , is a geminal dihalide; hydrolysis with aqueous KOH replaces both chlorines by hydroxyl groups on the same carbon, giving an unstable geminal diol,

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Question ID VK-148174