Question

QUESTION
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WHAT IS CORROSION
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Answer 1

Answer:

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Corrosion

Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment.

Additional Information..

There are five general types of corrosion: galvanic, stress cracking, general, localized, and caustic agent corrosion.Galvanic corrosion can also occur when one impure metal is present. If a metal contains a combination of alloys that possess different charges, one of the metals can become corroded

Answer 2

Answer:−

The surface of some metals, such as iron, is corroded when they are exposed to moist air for a long period of time. This phenomenal is called as corrosion.

Silver articles become black after sometime when exposed to air. This is because it reacts with Sulphur in the air to form a coating of silver sulphide.

Copper reacts with moist carbon dioxide in the air and slowly loses its Shiny brown surface and gains a green coat. This green substance is basic copper carbonate.

Iron when exposed to moist air for a long time acquires a coating of a brown flaky substance called rust.

PREVENTIONS :-

Painting

Oiling

Greasing

Galvanizing

Chrome plating

Anodising or making alloys

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hope it's help you