Question

Which of the following methods is suitable for preventing an iron frying pan from rusting?

• A. Applying grease
• B. Applying paint
• C. Applying a coating of zinc
• D. All of the above

Answer 1

The correct option is C

Applying a coating of zinc

Explanation for correct option:

C. Applying a coating of zinc

Rusting:

• Rusting is a chemical change.
• Rusting of iron refers to the formation of rust/a mixture of iron oxides on the surface of iron objects.
• An iron frying pan can be prevented from rusting by applying a coating of zinc, this process is known as Electroplating.
• “The process of depositing a layer of any desired metal on another material, by means of electricity, is called electroplating.”
• Iron tends to corrode and rust. So, a coating of zinc is deposited on iron to protect it from corrosion and the formation of rust.

Explanation for incorrect options:

A. Grease works as a lubricating agent. However, it can be used in removing rust but is not as efficient as zinc.

B. Applying paint can be helpful in removing rust but not in the case of frying pans.

Hence, the correct option is C i.e. Applying a coating of zinc is suitable for preventing an iron frying pan from rusting.