Question

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

please urgent paper h grr​

Answer 1

Sour substances are cidic 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.

Answer 2

bcz as curd is acidic so.it react with metal like copper and brass and form a salt which is not good for health