Question

Galvanisation is the process of coating iron with a layer of
A. Silver
B. Copper
C. Zinc
D. Nickel

Answer 1

Hint:Iron is a transition metal belonging to first-row d block elements, it is extracted from the ore Hematite and is often galvanized to protect it from the outer influence of water and oxygen, to protect it from rust and corrosion.


Complete solution:
The Galvanization process is done by coating a thin layer of metal that is usually less reactive, which means it is below the reactivity series than the metal it is being applied on.
This thin layer becomes the primary surface for the oxidation or rusting process and protects the inner metal from getting oxidized.
Galvanisation of Iron is usually done by dipping the iron in a ${\text{Z}}{{\text{n}}^{2 + }}$ solution (usually hot molten zinc), the positive charge on Zinc attracts the oxygen molecules present in water and the atmosphere, as a result, the oxygen attacks the zinc, and the iron metal beneath it remains protected.
Silver is one of the least reactive elements and is often coated to material, but it is also expansive and can not be used as an economically feasible option. Silver also has antibacterial properties and is also used in many medical industries.We can say that Galvanisation is the process of coating iron with a layer of Zinc.
Therefore, from the above explanation we can say that the correct option is (A).


Note:: Iron is even coated with chromium, but it is an expansive process, iron is also often coated with paints to protect it from water and getting oxidized. Galvanization is also done to steel along with iron for the same reasons.