Why is it unsafe to store curd in a copper vessel?
Answer and explanation
Correct answer: Acids in curd can react with copper
Curd contains lactic acid and is therefore acidic. If it is stored for a considerable time in a copper vessel, the acid may react with the metal. Such a reaction can form copper compounds that contaminate the food and may be harmful when consumed in excess. Copper does not convert curd into water or sweetness, and the statement that curd has no acid is incorrect. Hence option A is the safe and chemically relevant explanation.
Frequently asked questions
What is the correct answer to this question?
Acids in curd can react with copper
Why is this the correct answer?
Curd contains lactic acid and is therefore acidic. If it is stored for a considerable time in a copper vessel, the acid may react with the metal. Such a reaction can form copper compounds that contaminate the food and may be harmful when consumed in excess. Copper does not convert curd into water or sweetness, and the statement that curd has no acid is incorrect. Hence option A is the safe and chemically relevant explanation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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