Question

Why does rusting occur give four ways to prevent rusting

Answer 1

1.Rusting of iron can be prevented by painting.

2.Rusting of iron can be prevented by applying grease or oil.

3.Rusting of iron can be prevented by galvanisation.

3.Rusting of iron can be prevented by tin-plating or chromium plating.

4.Rusting of iron can be prevented by alloying it to make stainless stell.

Answer 2

Rusting occur when the iron comes in contact with air and water.

The four ways to prevent rusting are :

1. Coating the iron surface with oil or

paint.

2. Depositing zinc layer on the surface.

3. Iron surface can be preventing from

coming in contact with air and water.

4. Forming alloys of iron by combining it

with certain metals chemically.

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