Which one of the following salt(s) is used as a food preservatives?
مندرجہ ذیل میں سے کون سا نمک (اشیا) کھانے کے تحفظ کے طور پر استعمال ہوتا ہے؟
- Sodium sulphate
- Sodium nitrate
- Sodium citrate
- All of these
Explanation
Sodium nitrate, sodium citrate, and even sodium sulphate (less commonly) are used in preserving food by preventing microbial growth.
These salts help in extending shelf life and maintaining flavor or color in processed foods.
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