Question

Why is a layer of zinc-coated over iron?

Answer 1

Galvanization:

1. When iron reacts with the air around it, rust forms. Zinc is coated with iron to protect it from rusting.
2. The process of coating zinc over iron is known as Galvanization.
3. There are various methods of Galvanization but Hot-dip galvanizing is the most prevalent procedure, in which the pieces are immersed in a bath of hot, molten zinc.

Therefore, a layer of zinc-coated over iron.