Question

Which of the following method is suitable to prevent iron from rusting?

• A. applying a thin coating of grease
• B. applying a coat of oil paint
• C. galvanisation
• D. All of the above

Answer 1

Answer: (D)

All of the above

All these methods prevent iron from rusting :

Applying a thin coating of grease, applying a coat of oil paint, galvanization.

All these methods stop oxygen or water reaching the surface of the metal here iron.

As these layers are first oxidized on exposure to air, water, thereby protecting the iron inside.

Hence the option D is correct.