Explain the following:
Zinc is used to cover iron so as to prevent rusting of iron. Why

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Solution

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.

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Which of the following method is used for preventing iron from rusting?

Question 7

Galvanisation is a process used to prevent the rusting of which of the following?
(a) Iron
(b) Zinc
(c) Aluminium
(d) Copper

Which of the following can be used to prevent rusting of iron?

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