Multiple choice

The substance most commonly used as a food preservative is

  1. sodium bicarbonate

  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 (like sodium benzoate) are widely used as food preservatives because they inhibit the growth of mold and bacteria.