Which of the following gases is used as a preservative in the juice of fruits and jams?

Carbon dioxide

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Sulphur dioxide

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Dihydrogen

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Ammonia

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Solution

The correct option is C Sulphur dioxide
Sulphur dioxide gas is a good preservative because,
It is a great antioxidant. It helps prevent rotting of food material.
It is antimicrobial in nature. Thus it is used in the preservation of dried foodstuff and fruit juices to prevent the growth of microorganisms.

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