Question

Pickling of steel is

• A. Done to remove impurities or rust.
• B. inorder to corrode the metal
• C. to give an odour to the metal
• D. To make the metal more malleable

Answer 1

The correct option is A Done to remove impurities or rust.

Pickling is a surface treatment for metals which is used to remove impurities, such as stains, inorganic contaminants, rust or scale from ferrous metals, copper or precious metals and aluminium alloys.