Multiple choice

The substance most commonly used as a food preservative is

  1. sodium carbonate

  2. tartaric acid

  3. acetic acid

  4. benzoic acid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Benzoic acid and its salts (sodium benzoate) are widely used preservatives in acidic foods, beverages, and processed items. They inhibit microbial growth effectively. Acetic acid (vinegar) also preserves but is more commonly used directly in pickling.

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