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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: - Neutral divalent carbon species released as reaction intermediate in reaction
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- ArH + N₂ + H₃PO₃ + HX are the products of the following reaction
- When KMnO₄ reacts with KBr in alkaline medium gives bromate ion. Then oxidation
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Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Neutral divalent carbon species released as reaction intermediate in reaction
- ortho and para hydrogen differ in the
- ArH + N₂ + H₃PO₃ + HX are the products of the following reaction
- When KMnO₄ reacts with KBr in alkaline medium gives bromate ion. Then oxidation
- Which of the following substances will give amide, when reacted with NH₃
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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