Why does rancidity increase when oily food is kept in open air?
Answer and explanation
Correct answer: Oxygen in air oxidises oils and fats.
Oils and fats slowly undergo oxidation on exposure to oxygen in air. This produces substances that give the food an unpleasant smell and taste; this is called rancidity. Nitrogen is generally much less reactive, so option B is not the correct reason.
Frequently asked questions
What is the correct answer to this question?
Oxygen in air oxidises oils and fats.
Why is this the correct answer?
Oils and fats slowly undergo oxidation on exposure to oxygen in air. This produces substances that give the food an unpleasant smell and taste; this is called rancidity. Nitrogen is generally much less reactive, so option B is not the correct reason.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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