Question

Why should curd and sour substances not be kept in brass and copper

vessels?​

Answer 1

Answer:

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If these kinds of substances which possess acids are kept in copper containers or vessels they will react and produce salt and hydrogen and the vessel will be corroded. It can also produce harmful products that may spoil the food.

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Answer 2

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.