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What is the main chemical cause of oils and fats becoming rancid and developing a bad smell?

Answer and explanation

Correct answer: Oxidation

Oils and fats, especially unsaturated fats, react with oxygen in air and undergo oxidation. This oxidation produces foul-smelling substances and makes the oils or fats rancid; the process is called rancidity. Reduction is the opposite of oxidation, so it does not cause rancidity.

Related tags

Class 10 ScienceChemical ReactionsRancidityOxidationOils And Fats

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