Q.3.2. 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.
(c) Applying a coating of zinc
It will be most suitable method to prevent it. Paint and grease can also be applied but these are not suitable methods as the pan will be heated and washed again and again.