Which of the following organometallics is used in the purification of the metal centre ?

Options

A. Liquation
B. Distillation
C. Zone refining
D. Galvanisation

Answer

To solve the question "Which of the following organometallics is used in the purification of the metal centre?", we will analyze each option provided and determine their relevance to the purification of metals.

### Step-by-Step Solution:

1. **Understanding the Options**:
- The options given are liquation, distillation, zone refining, and galvanization. We need to evaluate each method to see if it is used for the purification of metals.

2. **Evaluating Liquation**:
- **Definition**: Liquation is a purification method that involves the partial melting of an ore to separate its constituents.
- **Application**: This method is particularly used for refining tin (Sn).
- **Conclusion**: Liquation is indeed a method used for the purification of metals.

3. **Evaluating Distillation**:
- **Definition**: Distillation is a purification technique that separates a compound from non-volatile or less volatile materials.
- **Application**: This method is commonly used for purifying mercury (Hg).
- **Conclusion**: Distillation is also a method used for the purification of metals.

4. **Evaluating Zone Refining**:
- **Definition**: Zone refining is a purification process that involves melting a small region of a solid and allowing impurities to be pushed out of the melt.
- **Application**: This method is primarily used for purifying semiconductors like silicon (Si) and germanium (Ge).
- **Conclusion**: Zone refining is another method used for the purification of metals.

5. **Evaluating Galvanization**:
- **Definition**: Galvanization is a process of applying a protective zinc coating to steel or iron to prevent rusting.
- **Application**: This method does not involve the purification of metals but rather their protection.
- **Conclusion**: Galvanization is not a method used for the purification of metals.

6. **Final Evaluation**:
- Based on the analysis, the methods that are used for the purification of metals are liquation, distillation, and zone refining. Galvanization does not qualify as a purification method.

### Answer:
The correct organometallics used in the purification of the metal centre are:
- **Liquation**
- **Distillation**
- **Zone Refining**