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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 is most base
- Which of the following has a tendency for covalent compound formation
- Vapour density of a gas is 22. What is its molecular weight
- Complexes with bidentate ligands are called
- During the crystallization of a solid from the aqueous solution, the following statement
Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which is most base
- Which of the following has a tendency for covalent compound formation
- Vapour density of a gas is 22. What is its molecular weight
- Complexes with bidentate ligands are called
- During the crystallization of a solid from the aqueous solution, the following statement
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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