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4. Which of the following salts is commonly used as a food preservative?
a) Sodium chloride
b) Potassium nitrate
c) Calcium carbonate
d) Iron oxide


Sagot :

Final answer:

Sodium benzoate, sodium sorbate, and potassium sorbate are organic salts commonly used as food preservatives.


Explanation:

Sodium benzoate is commonly used as a food preservative. It is added to cider, jellies, pickles, and syrups. Other organic salts such as sodium sorbate and potassium sorbate are also used in food preservation, like in fruit juices, soft drinks, and wine.


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