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Which of the following on addition of water in presence of acid gives a ketone
Options
(a) Propene
(b) Butene-2
(c) Propyne
(d) None of these
Correct Answer:
Propyne
Explanation:
Alkynes on hydration in presence of dilute H₂SO₄ and HgSO₄ as catalyst produces aldehydes and ketones. Water adds to form unstable enol intermediates which undergo rearrangment to form aldehyde or ketones. Acetylene on hydration gives aldehydes while all other alkynes produce ketones,
Related Questions: - Which of the following order is wrong?
- The number of electrons involved in the reduction of one nitrate ion
- Which of the following has the minimum bond length ?
- In which process,fused sodium hydroxide is eletrolysed for extraction of sodium
- The diazotization of two feebly basic aromatic amines is achieved by using
Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following order is wrong?
- The number of electrons involved in the reduction of one nitrate ion
- Which of the following has the minimum bond length ?
- In which process,fused sodium hydroxide is eletrolysed for extraction of sodium
- The diazotization of two feebly basic aromatic amines is achieved by using
Topics: Aldehydes Ketones and Carboxylic Acid (89)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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