Question

What do you mean by corrosion. how can you prevent it

Answer 1

When iron articles are oxidised under influence of atmospheric pressure(moist air) is called corrosion.
Methods of preventing it
1.coating with oil and grease
2.coating with paint
3.coating with other metals

Answer 2

Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment. Both the type of metal and the environmental conditions, particularly gasses that are in contact with the metal, determine the form and rate of deterioration.

prevention
1.galvanization
2.painting
3.tinning
4.anodization