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Why does rancidity occur faster when oily food is kept in warm, open air?

Answer and explanation

Correct answer: Contact with oxygen in air and a higher temperature speed up the oxidation of oils.

Rancidity is the development of unpleasant smell and taste due to oxidation of oils and fats. Open air supplies oxygen, and a higher temperature increases the rate of oxidation; therefore oily food becomes rancid faster. Nitrogen is comparatively unreactive and does not cause this oxidation.

Related tags

ScienceClass 10Chemical ReactionsRancidityOxidationFood Preservation

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