Why should curd and sour substances not be kept in brass and copper vessels?

Why do curd and sour substances not be kept in copper vessels ?

Assertion (A) : Pickles and sour substances are not stored in brass and copper vessels. Reason: Acids reacts with metals. A) 'A' and 'R' are correct. R is a correct reason for A. B) 'A' and 'R' are correct. R is not a correct reason for A. C) 'A' is correct, but 'R' is wrong. D) 'A' is wrong, but 'R' is correct.

Why should we eat food?

Why are the inner sides of vessels made up of brass and copper coated ?

Why should we recyle paper?

Why should not we cut the forests?

You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.

Why should weeds be removed?

The substance that prevents blood clotting in blood vessels is