_______is a process specially employed to protect iron object from rusting .

Options

A. Oiling
B. Painting
C. Rusting
D. Galvanization .

Answer

**Step-by-Step Solution:**

1. **Understanding Rusting**: Rusting is a chemical process that occurs when iron reacts with moisture and oxygen in the environment, leading to the formation of iron oxide, commonly known as rust. This process weakens the iron and can lead to structural failure.

2. **Identifying Protective Processes**: To prevent rusting, various methods can be employed. Some common methods include oiling, painting, and galvanization. Each of these methods has different purposes and effectiveness in preventing rust.

3. **Evaluating Oiling**: Oiling can prevent rust by creating a barrier between the iron and moisture. However, it is primarily used for lubrication and may not provide long-term protection against rust.

4. **Evaluating Painting**: Painting also serves as a protective layer against moisture and can prevent rusting. However, its primary purpose is aesthetic, and it may not be as effective in harsh environments.

5. **Understanding Galvanization**: Galvanization is a specific process that involves coating iron with a layer of zinc. This zinc layer acts as a protective barrier against moisture and oxygen, significantly reducing the risk of rusting.

6. **Conclusion**: Among the methods discussed, galvanization is the most effective and specialized process employed to protect iron objects from rusting. Therefore, the answer to the question is "Galvanization."

**Final Answer**: Galvanization is a process specially employed to protect iron objects from rusting.

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