Question

what is corrosion.... How we can prevent it?.... Tell 4 ways to prevent it???.. ​

Answer 1

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• The surface of some metals such as iron is corroded when they are exposed to moist air for a long period of time .
• This phenomenon is known as corrosion .
• Silver articles become black after sometime when exposed to air . This is because it reacts with Sulphur in their 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 :

1. painting
2. oiling
3. greasing
4. galvanizing
5. Chrome plating
6. anodizing or making alloys

Answer 2

Eating away of metals is known as corrosion.