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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: - If in a container no mass and no heat exchange occurs then it constitutes a
- In alkaline hydrolysis of a tertiary alkyl halides by aqueous alkali,
- The strongest reducing agent among the following is
- An example for a saturated fatty acid, present in nature is
- Which one of the following liquid pairs will exhibit a positive deviation from
Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If in a container no mass and no heat exchange occurs then it constitutes a
- In alkaline hydrolysis of a tertiary alkyl halides by aqueous alkali,
- The strongest reducing agent among the following is
- An example for a saturated fatty acid, present in nature is
- Which one of the following liquid pairs will exhibit a positive deviation from
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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