Fill in the following blanks with suitable words :
The two methods by which rusting of iron can be prevented are _____ and _____.

Answer

To fill in the blanks regarding the prevention of rusting of iron, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Rusting**: Rusting of iron occurs when iron is exposed to moisture and air, leading to the formation of iron oxide, which is commonly known as rust.

2. **Identifying Prevention Methods**: There are various methods to prevent rusting. We need to identify two effective methods.

3. **Method 1 - Painting**: One common method to prevent rusting is by painting. When iron objects are painted, a protective layer is formed that prevents direct contact with moisture and air, thus reducing the chances of rust formation.

4. **Method 2 - Galvanization**: Another effective method is galvanization, which involves coating iron with a layer of zinc. The zinc layer acts as a barrier to moisture and air, and even if the coating is scratched, zinc will corrode before iron does, providing additional protection.

5. **Final Answer**: Therefore, the two methods by which rusting of iron can be prevented are **painting** and **galvanization**.

### Fill in the blanks:
The two methods by which rusting of iron can be prevented are **painting** and **galvanization**.

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