Which of the following methods cannot be employed in order to prevent corrosion?

Covering the surface by paint

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Covering the surface by some chemical

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Allowing the surface to interact with moisture

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Providing the sacrificial electrode of another metal

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Solution

The correct option is C Allowing the surface to interact with moisture
Corrosion can be prevented by preventing the surface of of the metallic object to come in contact with the atmosphere. Options a, b and d shows methods of preventing the surface to come in contact with the atmosphere.

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