Forth floatation process is used for_________

Options

A. Bauxite
B. Haematite
C. Horn silver
D. Cinnabar

Answer

**Step-by-Step Solution:**

1. **Understanding the Froth Flotation Process:**
The froth flotation process is a method used for the concentration of ores. It selectively separates hydrophobic valuable minerals from hydrophilic waste gangue.

2. **Principle of Froth Flotation:**
The process relies on the differences in the wetting properties of the ore and gangue particles. Hydrophobic particles (valuable minerals) preferentially attach to air bubbles and rise to the surface, while hydrophilic particles (gangue) do not.

3. **Application of Froth Flotation:**
This method is particularly effective for the concentration of sulphide ores, where the ore is preferentially wetted by oil and the gangue by water.

4. **Identifying the Ores:**
The question provides several options:
- Bauxite (Al(OH)₃)
- Hematite (Fe₂O₃)
- Horn Silver (AgCl)
- Cinnabar (Hg₂S)

5. **Analyzing the Options:**
- **Bauxite** is primarily an aluminum ore and does not typically use froth flotation.
- **Hematite** is an iron ore and is usually concentrated by magnetic separation.
- **Horn Silver** is a silver chloride and is not concentrated by froth flotation.
- **Cinnabar** is a sulphide ore (Hg₂S) and is known to be concentrated using the froth flotation process.

6. **Conclusion:**
Based on the analysis, the correct answer is that the froth flotation process is used for **Cinnabar (Hg₂S)**.

**Final Answer:**
The froth flotation process is used for **Cinnabar (Hg₂S)**.

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