Which of the following methods is suitable for preventing an iron frying pan from rusting?
Applying paint
Applying grease
Applying a coating of zinc
all of these

Correct Answer: (c) Applying a coating of zinc

Explanation: The most suitable method for preventing an iron frying pan from rusting is applying a coat of zinc. This is called galvanization. Grease and paint are also used to prevent rusting from iron.