Q4 of 400 Page 191

What is meant by galvanization ? Why is it done?

Galvanization is a process of depositing a thin layer of zinc metal on iron objects. This is done to prevent iron fro rusting.

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2 What chemical process is used for obtaining a metal from its oxide? 3 State two ways to prevent the rusting of iron. 5 Name the metal which is used for galvanising iron. 6 Explain why, iron sheets are coated with zinc.