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Question

Choose the correct statements regarding rusting.


A

Painting

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B

Galvanising

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C

Chrome plating

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D

All of the given options are correct.

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Solution

The correct options are
A

Painting


B

Galvanising


C

Chrome plating


When substances made of iron are exposed to oxygen and moisture (water), rusting takes place. Rusting removes a layer of material from the surface and makes the substance weak. Rusting is a chemical change. Rusting makes iron flaky and friable and decreases its intended usage period. The strength, appearance, and permeability degrade which leaves the rusted iron useless.


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