Lesson 30: Rusting

Iron objects can rust. Therefore, how can you prevent them from rusting?
Difference between a rusted nail and unrusted nail
Rusted nail

- The nail with rusted surface is dull and rough
- When you scrap it off, the rusted surface will blister off.

Unrusted nail

-The clean non-rusted surface stays shiny.

There are different ways to prevent iron from rusting. We can keep it away from air and water. This can be done by:
( A ) Spay painting

( B ) Greasing or oiling

( C )Plastic coating

( D ) Tin plating

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