The process of protecting iron by coating with Zinc.

Options

A. smelting
B. galvanisation
C. rusting
D. corrosion

Answer

**Step-by-Step Solution:**

1. **Understanding the Problem**: The question asks for the process of protecting iron by coating it with zinc. This is important because iron is prone to rusting when exposed to moisture and air.

2. **Identifying the Process**: The specific method used to protect iron from rusting by applying a zinc coating is known as galvanization.

3. **Explaining Galvanization**: Galvanization involves the application of a protective zinc layer to iron or steel. This layer acts as a barrier, preventing moisture and oxygen from reaching the iron surface, which are the primary causes of rust.

4. **Benefits of Galvanization**: By coating iron with zinc, not only does it prevent rusting, but zinc also has sacrificial properties. If the zinc layer gets damaged, it will corrode before the iron does, thus providing additional protection.

5. **Conclusion**: Therefore, the process of protecting iron by coating it with zinc is called galvanization.

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