State two ways by which rusting can be prevented ?

Explanation

To answer the question about two ways to prevent rusting, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Rusting**:
- Rusting is the process where iron reacts with oxygen and moisture in the environment to form iron oxide, commonly known as rust. This occurs when iron is exposed to air and water.

2. **First Method - Oiling, Greasing, and Painting**:
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