When some metals are exposed to moisture, acids etc., they tarnish due to the formation of respective oxide on their surface. 8. What is the process of above statement? 9. How to prevent above process? 10. Whether it is oxidation or reduction?
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When some metals are exposed to moisture, acids etc., they tarnish due to the formation of respective metal oxide on their surface. This process is called corrosion. Corrosion can be prevented by painting the surface, oiling, greasing, galvanizing, chrome plating or making alloys.
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8. Rusting, generally in iron brown layer formation and in copper green layer formation
9. By painting or by electronic plating of rust proof metals like for example zinc on iron.
10. Redox reaction as metal is oxidized and H is reduced(H from water molecule)
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