Question

Zinc is used in galvanisation of iron not copper. Give reasons

Answer 1

Explanation:

Zinc is more reactive than iron, it is used to protect it from corrosion because when oxygen in the air reacts with the surface of zinc, a very dense and impermeable coating of zinc oxide is formed and it is this physical barrier that protects the zinc surface from further attack.

Answer 2

Answer:

in this method corrosion of zinc occur first because because zinc is more electropositive than iron.