Question

Why pickle and curd are not stored in the copper and brass utensils

Answer 1

Hey mate....
Here is your answer.....

Pickle and curd are not stored in the copper or brass utensils because pickle and curd are acidic in nature and acids react vigorously with brass or copper metal which is poisonous.

Hope it will help you.....
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Answer 2

Curd and Pickle contains acids.

Q. What is acid?

• An acid is a molecule or ion capable of donating a hydronium (proton or hydrogen ion H+)
• All acids are sour in nature.

Q. What acids do curd and pickle contain?

• Curd and Pickles contains Lactic acid.

Q. How are Pickles made?

• Pickles are made by placing vegetables in vinegar (Vinegar is an acid.)

Q. How is Curd made?

• Curd is made from milk which is slightly acidic in nature(as it contains lactic acid).

Now, Coming back to main Question, i.e., Why pickle and curd are not stored in the copper and brass utensils ?

✏ We know that acids react easily with metals to give salt and hydrogen gas.

✏ Acid + Metals ⇒ Salt + $\bold{H_{2}\uparrow}$

✏ When kept in copper or brass utensils,curd or pickle reacts with copper and forms toxic compounds (Toxic Salts) which may be unfit for human consumption,and may cause food poisoning.

✏ Thus, pickle and curd are not stored in the copper and brass utensils

Thanks! :)