What is the correct reason for avoiding storage of curd in a copper vessel?
Answer and explanation
Correct answer: Acids in curd can react with copper and form harmful salts
The governing concept is the reaction of acids with metals. Curd contains lactic acid and is therefore acidic. During prolonged storage, the acid may react with copper, producing soluble copper compounds that can contaminate the food and may be harmful in excess. The vessel is consequently unsuitable for curd. Option A is correct; B and C describe impossible changes, while D incorrectly denies the presence of acid in curd.
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What is the correct answer to this question?
Acids in curd can react with copper and form harmful salts
Why is this the correct answer?
The governing concept is the reaction of acids with metals. Curd contains lactic acid and is therefore acidic. During prolonged storage, the acid may react with copper, producing soluble copper compounds that can contaminate the food and may be harmful in excess. The vessel is consequently unsuitable for curd. Option A is correct; B and C describe impossible changes, while D incorrectly denies the presence of acid in curd.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Metals and Non-metals.
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