Which of the following are not used as food preservatives?
(a) Table salt
(b) Sodium hydrogencarbonate
(c) Cane sugar
(d) Benzoic acid
Answers (b), and (c).
Food preservatives prevent spoilage of food due to microbial growth. The most commonly used preservatives include table salt, sugar, vegetable oils, and sodium benzoate. Sodium hydrogen carbonate and Cane Sugar are not used as food preservatives.