Question

what is corrosion and rusting? list ways to prevent rusting

Answer 1

1 : Metallic coating
2 : Painting on object
3rd and best way to prevent rusting is alloying

Answer 2

corrosion is a natural process which converts refined metal to more chemically stable

rust is an iron oxide usually red oxide in hindi we say it jang it can be come due to moisture in the air and water iron 

ways to prevent it is 
coating
painting
bluing
etc 

thanks