Refining of Iron is done by-

Options

A. Electrolytic method
B. Zone refining
C. Poling
D. Selective oxidation

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about the method used for the refining of iron. In metallurgy, refining is the process of purifying a metal by removing impurities.

2. **Identifying the Options**: The options provided are:
- A) Electrolytic method
- B) Zone refining method
- C) Poling method
- D) Selective oxidation method

3. **Analyzing Each Option**:
- **Electrolytic Method**: This method is typically used for metals like copper and aluminum but is not commonly used for iron refining.
- **Zone Refining Method**: This method is mainly used for purifying semiconductors and is not applicable for iron.
- **Poling Method**: This method is specifically used for refining metals like iron, tin, and copper. It involves stirring molten metal with green wood to reduce oxidized impurities.
- **Selective Oxidation Method**: This method is not a standard method for refining iron.

4. **Conclusion**: Based on the analysis, the poling method is the correct answer for the refining of iron. It effectively removes oxidized impurities from the molten metal.

5. **Final Answer**: The refining of iron is done by the **Poling Method**.

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