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| Q. |
Which one of the following is used as a food preservative? |
| A. | Sodium benzoate |
| B. | Sodium thiosulphate |
| C. | Sodium hydroxide |
| D. | Sodium bicarbonate |
| Answer» A. Sodium benzoate | |
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Explanation: Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid. |
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