Explain how painting of an iron gate prevents it from rusting.

Explanation

**Step-by-Step Solution:**

1. **Understanding Rusting**: Rusting is a chemical process that occurs when iron reacts with moisture (water) and oxygen in the air. This reaction leads to the formation of rust, which is primarily composed of iron oxide.

2. **Conditions for Rusting**: For rusting to occur, two main conditions must be present: the presence of moisture and oxygen. Moisture can come from rain, humidity, or any water source, while oxygen is present in the air.

3. **Effects of Rusting**: When iron rusts, it forms a reddish-brown substance that can flake off, leading to deterioration of the iron. This not only affects the appearance of the iron gate, making it look dull and unattractive, but also weakens the structure over time.

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