Navigate

Which of the following on addition of water in presence of acid gives a ketone

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,

JK2002
admin:

Related Questions

  1. If 0.2g of an organic compound containing carbon, hydrogen, and oxygen on combustion
  2. In methane four C-H bonds are directed towards the corners of
  3. Which one of the following compounds is used as a body deodorant
  4. Main constituents of LPG is
  5. The hybridisation of carbons of C-C single bond of HC ≡C-CH =CH₂ is