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Reaction of phenylacetylene with dil. H2SO4 and HgSO4 gives

1. Acetophenone
2. 2-Phenylethanol
3. Phenylacetaldehyde
4. Phenylacetic acid

Correct answer: Acetophenone

Solution

Phenylacetylene undergoes hydration in the presence of dilute H2SO4 and HgSO4, following Markovnikov's rule, to form acetophenone as the major product.

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