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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: - For a spontaneous process, entropy always
- Alum is a water purifier because it
- Which one of the following is the correct order of size of othe iodine specifies?
- The aqueous solution of which of the following salt will have the lowest pH
- Which one is not a constituent of nucleic acid
Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For a spontaneous process, entropy always
- Alum is a water purifier because it
- Which one of the following is the correct order of size of othe iodine specifies?
- The aqueous solution of which of the following salt will have the lowest pH
- Which one is not a constituent of nucleic acid
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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