Question:
Which of the following acts as pickling agent?
Which of the following acts as pickling agent?
Updated On: Aug 1, 2022
- $HNO_{3}$
- $HCl$
- $H_{2}SO_{4}$
- $HNO_{2}$
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The Correct Option is C
Solution and Explanation
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, enameling, galvanising etc
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Concepts Used:
Refining
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