Why should curd or pickle not be stored in copper vessels?
Answer and explanation
Correct answer: Acids can react with metal and form harmful salts
The governing concept is the reaction of food acids with reactive metals. Curd contains lactic acid, and many pickles contain acids such as acetic acid. These acids can react with copper when food is stored in a copper vessel for a long time, forming copper salts that may contaminate the food and be harmful in excess. Thus option A is correct. The other choices contradict the presence of acids or make unsupported claims about copper.
Frequently asked questions
What is the correct answer to this question?
Acids can react with metal and form harmful salts
Why is this the correct answer?
The governing concept is the reaction of food acids with reactive metals. Curd contains lactic acid, and many pickles contain acids such as acetic acid. These acids can react with copper when food is stored in a copper vessel for a long time, forming copper salts that may contaminate the food and be harmful in excess. Thus option A is correct. The other choices contradict the presence of acids or make unsupported claims about copper.
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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