During galvanisation, iron metal is given a thin coating of one of the following metals. This metal is:
(a) chromium (b) tin (c) zinc (d) copper

(c) zinc
Galvanisation is a process that involves dipping of iron objects into melted zinc. This gives a thin coating of zinc layer on the iron object that protects it from corrosion. Zinc, being a highly reactive metal, forms a thin layer of zinc oxide, which prevents iron from getting exposed to the atmospheric air.