Question

Galvanization is the:

• A. deposition of aluminium on iron
• B. deposition of copper on iron
• C. deposition of tin on iron
• D. deposition of zinc on iron

Answer 1

The correct option is D deposition of zinc on iron

Galvanization is the process of applying a protective zinc coating to steel or iron, to prevent rusting.

It forms a deposition of zinc which prevents corrosive substances from reaching the underlying steel or iron.

The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.

The zinc protects its base metal by corroding before iron.

Hence, the correct option is $\text{D}$