Rancidity
Rancidity is the bad smell and bad taste that develop in fats and oils when they oxidize.
Practice This ConceptMain explanation
Teacher explanation
Food items with oil or fat can turn unpleasant when exposed to air for too long. Heat and light can make the process faster. That is why packed snacks are stored carefully.
Example
Open chips left for many days may smell stale because their oil becomes rancid.
Simple analogy
No air, less rancid smell.
Common confusion
Students often confuse rancidity with spoilage by germs only. Rancidity is mainly due to oxidation of oils and fats.
Exam tip
If the question mentions stale smell, bad taste, or oily food kept open, think rancidity.
Answer writing and exam use
1-mark use
Write the exact meaning of rancidity in one clean line.
2-mark use
Define rancidity and add one example or condition.
3-mark use
Explain rancidity, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
Open the concept quiz intro first, review the test details, and then start a focused MCQ set from this concept only. Instant score and answer review are live now.
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