Which is correct process-mineral group in metallurgical extraction ?

Options

A. Leaching : `Ag`
B. Van Arkel : `Zr`
C. Liquation : `Sn`
D. Zone refining : `Sn`

Explanation

To determine the correct process-mineral group in metallurgical extraction, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Analyze Option 1: Leaching with Ag (Silver)**
- **Explanation**: Leaching is a process used to extract minerals from solid materials by dissolving them in a liquid. In this case, leaching can be used to extract silver from its ores.
- **Conclusion**: This is a correct process for metallurgical extraction.

2. **Analyze Option 2: 1-Arkyl with Zr (Zirconium)**
- **Explanation**: The 1-Arkyl process is known as the first industrial method for the commercial production of pure ductile metallic zirconium. This process is also considered a method of extraction.
- **Conclusion**: This is a correct process for metallurgical extraction.

3. **Analyze Option 3: Liquidation with Sn (Tin)**
- **Explanation**: Liquidation is a metallurgical method used for separating minerals from ores or alloys. It involves the melting of the metal and separating it from impurities. This method can be applied to tin extraction as well.
- **Conclusion**: This is a correct process for metallurgical extraction.

4. **Analyze Option 4: Zone Refining with Sn (Tin)**
- **Explanation**: Zone refining (or zone melting) is a method used for purifying crystals. It involves melting a narrow region of a crystal and moving this molten zone along the crystal. This process is not primarily used for metallurgical extraction but rather for purification of materials.
- **Conclusion**: This is not a correct process for metallurgical extraction.

### Final Conclusion:
- The correct processes for metallurgical extraction from the given options are:
- **Option 1: Leaching with Ag**
- **Option 2: 1-Arkyl with Zr**
- **Option 3: Liquidation with Sn**
- **Option 4: Zone Refining with Sn is incorrect.**