Question

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

Answer 1

Answer:

Why should curd and sour substances not be kept in brass or copper vessels? Both the Curd and sour substances are acids. Acids react with metals to produce salt and hydrogen gas. So, if such substances are kept in a copper container, the acid will react and the container will be corroded.

Answer 2

Answer:

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