Asked in Premeth Test 15 — Organic Chemistry Concepts and Hydrocarbons (17 March 2025) 2025

Acetylene is oxidised by KMnO4 to form

Correct answer: C. Oxalic acid

  • A. Acetic acid
  • B. Ethyl alcohol
  • C. Oxalic acid
  • D. Ethylene glycol

Explanation

The end product of the oxidation of ethyne is Oxalic acid. When ethyne undergoes oxidation, it first forms Glyoxal, which then further oxidizes to Oxalic acid. This makes Option C, Oxalic acid, the correct answer. Options A, B, and D are incorrect because they do not align with the specific products formed from the oxidation of alkynes.

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About Alkynes

Alkynes are unsaturated hydrocarbons containing a carbon-carbon triple bond, with sp-hybridised carbon atoms and a linear arrangement around the bond. The content includes nomenclature, preparation, acidity of terminal alkynes, and addition reactions with hydrogen, halogens, hydrogen halides and water, as well as oxidation.

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