Multiple choice

Which of the following is used most commonly as a food preservative?

  1. Benzoic

  2. Acetic acid

  3. Tartaric acid

  4. Sodium carbonate
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A Correct answer
Explanation

Benzoic acid and its sodium salt (sodium benzoate) are commonly used as food preservatives because they effectively inhibit the growth of bacteria, yeast, and molds in acidic foods. Acetic acid (vinegar) is used but less commonly as a preservative.

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