Galvanisation is applying a coating of

Options

A. Cr
B. Cu
C. Zn
D. Pb

Answer

### Step-by-Step Solution:

1. **Understanding Galvanization**:
- Galvanization is a process used to protect metals from corrosion. It involves applying a protective coating to the metal surface.

2. **Coating Material**:
- The common material used for galvanization is zinc. This is because zinc has properties that make it effective in preventing corrosion.

3. **Mechanism of Protection**:
- Zinc acts as a sacrificial anode. This means that when zinc is coated on a more reactive metal (like steel), it will corrode preferentially.
- The zinc will react with moisture and acids in the environment, thus protecting the underlying metal (steel) from rusting and degradation.

4. **Reapplication**:
- Over time, the zinc coating may wear away due to corrosion. However, it can be reapplied to ensure continued protection of the steel underneath.

5. **Conclusion**:
- Therefore, galvanization is the process of applying a coating of zinc to prevent corrosion of metals, particularly steel.

### Final Answer:
Galvanization is applying a coating of **zinc**.

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