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Chemistry Medium CSS FPSC PPSC Uploaded: 14 Jul 2026

Which organic functional group is present in carboxylic acids?

  • A Hydroxyl group
  • B Carboxyl group COOH
  • C Carbonyl group
  • D Amino group
Correct Answer: Option B — Carboxyl group COOH
Explanation:
The carboxyl group COOH is the functional group present in all carboxylic acids and is responsible for their acidic properties as it can donate a proton to a base.
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