Galvanized iron sheets are coated with

Options

A. Copper
B. Nickel
C. Zinc
D. Carbon

Explanation

**Step-by-Step Solution:**

1. **Understanding Galvanization:**
- Galvanization is a process used to protect iron or steel from rusting. This is achieved by coating the metal with a layer of zinc.

2. **The Problem of Rusting:**
- Iron, when exposed to air and moisture, undergoes a chemical reaction that leads to rust formation. Rust is primarily composed of hydrated iron(III) oxide, represented by the formula Fe2O3·xH2O.

3. **Role of Zinc:**
- Zinc is more reactive than iron. When zinc is applied as a coating on iron sheets, it acts as a sacrificial anode. This means that in the presence of moisture and air, zinc will oxidize before iron does, thus preventing the iron from rusting.

4. **Conclusion:**
- Therefore, galvanized iron sheets are coated with zinc to protect them from corrosion and rusting.

**Final Answer:**
Galvanized iron sheets are coated with zinc.

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