Question

define corrosion what are its prevention

Answer 1

Corrosion is the gradual destruction of materials by chemical reaction with the environment, usually through oxidation.
Corrosion can be prevented by:
* Galvanization
*chrome plating
*painting,oiling,greasing
*anodizing or making alloys

Answer 2

When the surface of a metal is attacked by air ,moisture or any other substance around it ,the metal is said to be corroded and the phenomenon is called corrosion.It is also called weeping of metal.
Prevention can be done by galvanizing the metal or by the usage of lubricants