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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
Corrosion can be prevented by
- painting the surface
- by galvanising
- by zinc plating
- by greasing the surface
But, incase of a frying pan,
(a) grease can not be used to prevent rusting of a frying pan because it may spoil the food.
(b) paint can not be used to prevent rusting as the fry pan is heated and washed , the paint can come off .
Hence, (c) galvanising ( applying a coating of zinc) is the most suitable method to prevent rusting in this case.
So, the correct answer is (c)
