Metallury involves steps :

Options

A. Cencentration of ore
B. Reduction of ore
C. Purification
D. Alloy formation

Answer

### Step-by-Step Solution:

1. **Definition of Metallurgy**:
- Metallurgy is defined as the process of extracting metals from their ores through systematic procedures. This involves several steps that transform the ore into a pure metal.

2. **Step 1: Concentration of Ore**:
- The first step in metallurgy is the concentration of ore. This process involves the removal of impurities (earthy materials) from the ore to increase the percentage of the desired metal. Techniques such as gravity separation, magnetic separation, or flotation may be used depending on the type of ore.

3. **Step 2: Extraction of Metal**:
- After concentrating the ore, the next step is the extraction of the metal from the concentrated ore. This can be achieved through various methods such as pyrometallurgy (using heat), hydrometallurgy (using aqueous solutions), or electrometallurgy (using electrical energy), depending on the nature of the ore and the metal being extracted.

4. **Step 3: Refining of Metal**:
- The final step in the metallurgy process is refining, which involves further purification of the extracted metal to remove any remaining impurities. This can be done through methods such as electrolysis, distillation, or chemical refining.

5. **Conclusion**:
- In summary, metallurgy involves three main steps: concentration of ore, extraction of metal, and refining of the metal. Each of these steps is crucial for obtaining pure metals from their ores.