Multiple choice

Acetic acid is present in

  1. vinegar

  2. curd

  3. lime

  4. fish

  5. rancid butter
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A Correct answer
Explanation

Vinegar is essentially a solution of acetic acid (typically 5-8% by volume) in water. It is produced through fermentation of ethanol by acetic acid bacteria. Curd contains lactic acid, lime contains citric acid, fish is not characterized by acid content, and rancid butter contains fatty acids from lipid oxidation.

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