Question

Galvanizing is a process in which Iron or Steel is coated with a thin layer of ________ to protect from corrosion.

Answer 1

Sometime you may have heard that Iron and steel objects are corroded very easily. So, galvanizing is a method of prevention of corrosion. This is a method which prevents oxygen and water from reaching the surface of metals.

Complete answer:
When iron and steel are exposed to oxygen in air and water or water vapors, a rust is formed on the surface of iron and steel objects. The process of formation of rust in presence of oxygen and water or water vapors is called rusting.
So, various methods are adapted to prevent corrosion. Galvanization is one of the methods to prevent rusting of iron.
Galvanization is the method of applying a protective layer on the surface of metal in order to prevent it from corrosion. That protective layer is of zinc metal. It is a very common process of preventing corrosion. Zinc- plated or galvanized iron is used to prevent corrosion.
The galvanization process can be by dipping the metal to be protected in a hot, molten zinc. Due to this process, a protective layer of zinc coated on the surface of metal which protects it from the atmospheric reaction with oxygen and water or water vapors, hence avoiding corrosion and weathering.
In the given question, a thin layer of zinc coating is used to protect from corrosion.
Galvanizing is a process in which Iron or Steel is coated with a thin layer of Zinc to protect from corrosion.

Note:
Galvanization helps to extend the life of the iron and steel objects by forming a protective layer between the metal and the air. It prevents the accumulation of iron oxide on the surface of the material. It offers corrosion resistance to environmentally exposed parts.