Question

# Galvanisation is applying a coating of: A.Cr B.Cu C.Zn D.Pb

Hint: Corrosion is defined as slowly eating away of metal due to the attack of air , water and moisture present in the environment.
When metal is iron in corrosion or we can say that corrosion of iron is called rusting.Rust is apparently a hydrated form of iron(III)oxide. The formula is approximately $Fe_2O_3.32H_2O$, although the exact amount of water is variable.
Rusting can be prevented by galvanization.