Which among the following is used as food preservative?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Sodium Benzoate
Sodium benzoate, \( \ce{C6H5COONa} \), the sodium salt of benzoic acid, is used as a food preservative.
So the food preservative among the options is sodium benzoate.
NCERT (2026-27 edition):
Uses of Carboxylic Acids
