Predict the correct intermediate and product in the following reaction

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Solution

The correct option is B
One molecule of water adds to an alkyne when it is warmed with $H g S O_{4}$ and dil. $H_{2} S O_{4}$ at 333 K to forms a carbonyl compound.
The addition of $H_{2} O$ to the alkynes follows Markovnikov's rule.
The intermediate formed in the reaction undergoes keto-enol tautomerism to given ketone product.

Hence, option (d) is correct.

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(A)

(B)

C H_{3} - C \equiv C H H_{2} S O_{4}, H_{2} O - ------- \to H g S O_{4} (A) \to (B)

Predict the product of the following reaction and choose the correct options.

C H C l_{3} 4 O H^{-} - --- \to H C O O^{-} + 3 C l^{-} + 2 H_{2} O

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