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Phenylacetylene on treatment with HgSO(4...

Phenylacetylene on treatment with `HgSO_(4)//H_(2)SO_(4), H_(2)O` produces

A

acetophenone

B

phenylacetaldehyde

C

phenylacetic acid

D

1-phenylethanol

Text Solution

Verified by Experts

The correct Answer is:
A
`underset("Phenyl acetylene")(C_(6)H_(5)-C -= CH) underset(H_(2)SO_(4))overset(H_(2)O,HgSO_(4))to C_(6)H_(5)- overset(OH)overset(|)C=CH_(2) overset("tautomerises")hArr underset("Acetophenone")(C_(6)H_(5)- overset(O)overset(||)C-CH_(3))`
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MODERN PUBLICATION-HYDROCARBONS-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (MULTIPLE CHOICE QUESTIONS from competitive examinations (JEE (Main) and Other State Boards. Engineering Entrance))
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  2. Which of the following molecules is least resonance stabilized ?

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  3. The trans-alkenes are formed by the reduction of alkynes with

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  4. What final product will form when alcoholic KOH is treated with 1, 1-...

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  5. The reagent X' used for the following reaction is

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  6. Number of possible constitutional isomers of alkane with formula C6 H1...

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  7. Phenylacetylene on treatment with HgSO(4)//H(2)SO(4), H(2)O produces

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  8. CH(3)-C -=CMgBr can be prepared by the reaction of

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  9. The major product of the following reaction is : CH(3)CH(2)underset(...

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  10. The most stable conformation of cyclohexane is :

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  11. Reaction of sodium acetate with soda lime will produce which of the fo...

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  12. The compound which does not lead to benzoic acid by oxidation with KMn...

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  13. Sulphonation of benzene with excess sulphuric acid provides

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  14. Propylene on treatment with HBr//H(2)O(2) provides

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  15. The alkyl halides required to prepare by Wurtz reaction are

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  16. But-2-yne is reduced to trans-but-2-ene using

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  17. The alkane formed on heating sodium butanoate with soda lime is

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  18. But-2-ene on reaction with alkaline KMnO(4) at elevated temperature fo...

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  19. CH(3)-CH=CH(2)overset(Cl(2)//H(2)O)to The correct product is

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  20. Which of the following compound is not aromatic?

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