Question

why we should not keep curd in copper or brass vessel what treatment should be given to these vessels before use​

Answer 1

Answer:

we should not keep it  in the copper vessels because it will react and get spoilt

Explanation:

Answer 2

Answer:

sour substances are acidic in nature,i.e, they have acids in them. So, when they are kept in brass or copper vessels, they react with them and form poisonous or better to say toxic elements which may prove harmful for human body. So they are not kept in metal containers.

Explanation:

Hope it helps you.....