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Which of the following acts as pickling ...

Which of the following acts as pickling agent ?

A

`HNO_(3)`

B

HCl

C

`H_(2)SO_(4)`

D

`HNO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
To remove the oxide film on metallic sheet, the sheet is dipped in `H_2 SO_4` solution and then washed with water. This is known as pickling. `H_2 SO_4` is used for cleansing metals before electroplating, enamelling, galvanising etc.
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