Radha kept milk for curdling in a copper vessel while Priya used steel vessel for the same. Which of the two would be edible and why?

Question

Q. Priya has to choose between silver and copper vessels for heating. You would suggest Priya to prefer:

Answer 1

The curd is acidic in nature. As we know the acid attacks most of the metal. If we kept curd in copper and brass it will form a toxic compound harmful for humans. So, we use stainless steel vessels.

Answer 2

When we keep acid (curd) in a copper vessel, they react with each other and produce hydrogen gas and salt. Hydrogen gas is poisonous if combine with metals which is harmful to our body's health.

Answer 3

$M e t a l + A c i d = S a l t + h y d r o g e n g a s$