Which among the following is a common preservative?

Potassium sulphate

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Vinegar

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Ammonia

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Nitrogen

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Solution

The correct option is B
Vinegar

Preservatives are substances added to food items to preserve them for a long time. Salt solution, sugar solution, oil, vinegar are commonly used preservatives. Apart from these, synthetic chemicals such as sodium benzoate and potassium sulphate are also used.

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N_{2 (g)} + H_{2 (g)} \to N H_{3 (g)}

Translate the following statements into chemical equations and then balance them.

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