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

Why should curd and sour substances not be kept in brass and 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.

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 do science?

Do substances change their taste when cooked ?

When a Radioactive substance is kept in a vessel, थे atmosphere around it is rich with

Do substances change colour when added to other substances ?

Why do statues and vessels made up of copper become dull green after certain time ?

The black coloured substance formed when copper is heated in presence of oxygen.