Question

why should curd and carbon substance not kept in brass​

Answer 1

Answer:

when kept in copper or brass vessels,curd(and other acidic food items) reacts with copper and forms toxic compounds which may be unfit for human consumption,and may cause food poisoning.thus it is not advisable to keep curd and other acidic or sour food items in copper or brass vessels.

Answer 2

Answer:they contain acid which can react with metals and form salts.

Explanation:because i've tried it myself and it did not go very well and i learned it in chemistry