Describe the process of galvanization. How is it useful ?

Explanation

The process of coating zinc over iron articles is called galvanisation. Zinc is used in the process of galvanising iron sheets. In the galvanisation process, the hot iron sheets are dipped in molten zinc and then passed through hot and heavy rollers. On cooling, a coating of zinc metal is formed over the iron sheets. The coating of zinc protects iron from rusting, and hence, is used for the manufacture of iron tanks, rain water, drain pipes, etc.