Which of the following benefication processes is used for the mineral `Al_(2)O_(3).2H_(2)O` ?

Options

A. Froth flotation
B. Leaching
C. Liquation
D. Magnetic separation

Answer

To determine the beneficiation process used for the mineral \( \text{Al}_2\text{O}_3 \cdot 2\text{H}_2\text{O} \), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Mineral**: The mineral in question is \( \text{Al}_2\text{O}_3 \cdot 2\text{H}_2\text{O} \), which is known as hydrated alumina or bauxite.

2. **Understand Beneficiation**: Beneficiation refers to the process of increasing the economic value of ore by removing impurities. In the case of aluminum ores, the goal is to extract pure alumina from the ore.

3. **Determine the Suitable Process**: The common processes for the beneficiation of aluminum ores include:
- **Leaching**: This involves treating the ore with a solvent to dissolve the desired minerals while leaving impurities behind.
- Other processes like flotation or magnetic separation are less common for aluminum ores.

4. **Identify the Leaching Agents**: In the leaching process, agents such as sodium hydroxide (NaOH) are typically used to dissolve alumina. The impurities remain insoluble and can be removed.

5. **Conclusion**: Based on the above analysis, the beneficiation process used for the mineral \( \text{Al}_2\text{O}_3 \cdot 2\text{H}_2\text{O} \) is the **leaching process**.

### Final Answer:
The beneficiation process used for the mineral \( \text{Al}_2\text{O}_3 \cdot 2\text{H}_2\text{O} \) is **leaching**.

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