Coating of which among the following metal is termed as Galvanization?

Coating of which among the following metal is termed as Galvanization? Correct Answer Zinc

The correct answer is Zinc.

Key Points

Galvanization

• The process of putting a protective zinc coating to iron to prevent rusting is known as galvanization.
• It extends the life of iron parts by establishing a membrane between the metal and the air, which prevents iron oxide from developing on the steel layer.
• Galvanization also provides greater corrosion protection to parts that are exposed to air.
• Galvanizing protects against rust and corrosion in several ways:

1.      It acts as a barrier, preventing corrosive chemicals from reaching the iron beneath.
2. The zinc acts as a sacrificial anode, meaning that even if the coating is damaged, the exposed steel is still protected by the zinc that remains on it.
3. The zinc surface reacts with the environment to generate a dense, adhering patina that is impervious to moisture.

Explanation:

• Galvanization is a process in which zinc is coated on iron.
• Zinc act as a barrier and prevents iron's direct contact with air.

Thus, the correct answer to this question is Zinc. 
Additional Information

Corrosion:

• Corrosion is the oxidation-induced deterioration of certain materials, both metals, and non-metals.
• When a substance is exposed to air or certain chemicals, it can corrode.
• It can occur on different surfaces of substances like wood, alloys, metal, etc. 
• Degradation is a type of corrosion that can occur in materials such as polymers and ceramics.
• Corrosion reduces the durability of these substances. 

Rusting:

• The oxidation of iron in the presence of air and moisture is known as rusting.
• It is an example of corrosion.
• It is a chemical process that leads to the formation of Rust. 
• Rust is an iron oxide, a reddish-brown oxide that forms when iron and oxygen react in the presence of water or air moisture.