explain various methods of preventing rusting of iron

Rusting can be prevented by:

1. Galvanization: It is the process of coating the iron object with a protective layer of Zinc, which gets oxidized but prevents rusting of iron.
2. Painting the iron object: this prevents the surface of the iron object to get oxidized by coming in contact with moisture.
3. Alloying the metal to make its chemical properties resistance to rust, for example iron is alloyed with carbon to form steel, which does not rust easily.
4. The iron object can be greased with oil to prevent its contact with moisture.