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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: - In which of the following pairs, both the species are not isostructural ?
- The molar fraction of nitrogen, in a mixture containing 70 grams nitrogen,
- Salt cake is
- Which one of the following is called a carbylamine
- Which of the following aqueous acid is most acidic
Topics: Aldehydes Ketones and Carboxylic Acid
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In which of the following pairs, both the species are not isostructural ?
- The molar fraction of nitrogen, in a mixture containing 70 grams nitrogen,
- Salt cake is
- Which one of the following is called a carbylamine
- Which of the following aqueous acid is most acidic
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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