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What is the most correct reason why oily food kept in warm open air spoils quickly?

Answer and explanation

Correct answer: Oxygen in air oxidises oils and heat speeds up this process

Oils and fats react with oxygen in air and undergo oxidation. This produces an unpleasant smell and taste, called rancidity. A higher temperature increases the reaction rate, so oily food spoils faster in warm open air. Nitrogen is relatively unreactive and does not convert oils into sweet substances. Exam tip: Connect spoilage of fats and oils with oxidation and rancidity.

Related tags

Class 10 ScienceChemical ReactionsOxidationRancidityFood Spoilage

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