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

What type of reaction do alkynes undergo across the triple bond

Correct answer: A. Addition reaction

  • A. Addition reaction
  • B. Elimination reaction
  • C. Substitution reaction
  • D. Halogenation

Explanation

Alkynes undergo addition reactions across the triple bond because of their weak pi-bonds between carbon atoms, which are converted into stronger sigma bonds by the addition of electrophiles. This process helps them become more stable. The other options are incorrect because alkynes typically do not undergo elimination or substitution reactions at the triple bond, and while halogenation is a type of addition reaction, alkynes can undergo addition reactions with various other compounds as well.

Last updated

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.

Practise Chemistry of Hydrocarbons

1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions