Question

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

Answer 1

Curd and sour substances contain acids. Acids react with metals to produce salt and hydrogen gas. So, if such substances are kept in copper container, the acid will react and the container will be corroded.

Answer 2

Answer:

because the curd reacts with the brass and copper vessels.and becomes a chemical substance.so we not kept in brass and copper vessels