Aldehydes undergo:

Correct answer: C. Nucleophilic addition reaction

  • A. Electrophilic addition reaction
  • B. Substitution reaction
  • C. Nucleophilic addition reaction
  • D. None of these

Explanation

So, when aldehydes undergo nucleophilic addition reactions, it means that a nucleophile (a species with a lone pair of electrons) attacks the carbonyl carbon of the aldehyde. This results in the formation of a new bond between the nucleophile and the carbon, while the oxygen atom of the carbonyl group gets a new bond with a hydrogen atom.

This question appeared on the KMU Centralized Admission Test 2020 paper, which you can sit online with every answer explained.

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About Nucleophilic Addition Reactions

Nucleophilic addition occurs at the polar carbonyl group of aldehydes and ketones, where a nucleophile attacks the electron-deficient carbon atom. Reactions with hydrogen cyanide, sodium bisulfite, alcohols and Grignard reagents are explained through tetrahedral intermediates, acid or base catalysis, and the different reactivity of aldehydes and ketones.

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