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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: - Pick out the stronger reducing agent among the following oxyacids of phosphorus
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- As ester can be prepared by reacting an alkyl halide with
- High ionisation energy indicates that
- Li occupies higher position in the electrochemical series of metals as compared
Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Pick out the stronger reducing agent among the following oxyacids of phosphorus
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- As ester can be prepared by reacting an alkyl halide with
- High ionisation energy indicates that
- Li occupies higher position in the electrochemical series of metals as compared
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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