Froth floatation process involves the :

Options

A. treatment of the ore with water and pine oil
B. warming of the ore with a stream of water
C. pouring of the ore over the belt rotating over magnetic rollers
D. heating the ore with aluminium

Explanation

### Step-by-Step Solution:

1. **Understanding the Froth Flotation Process**:
- The froth flotation process is a physical method used for separating valuable minerals from the gangue (waste material) in ores. It is particularly effective for the concentration of sulfide ores.

2. **Principle of the Process**:
- The process is based on the differences in the wettability of different minerals. Some minerals are preferentially wetted by oil, while others are wetted by water.

3. **Materials Used**:
- In the froth flotation process, the ore is treated with water and a collector, typically pine oil, which enhances the hydrophobicity of the desired mineral particles.

4. **Separation Mechanism**:
- When the mixture of ore, water, and pine oil is agitated, the hydrophobic ore particles attach to the air bubbles and rise to the surface, forming a froth. The gangue, which is hydrophilic, remains in the water and sinks to the bottom.

5. **Conclusion**:
- Therefore, the correct option that describes the froth flotation process is the treatment of the ore with water and pine oil.

### Final Answer:
The froth flotation process involves the treatment of the ore with water and pine oil (Option A).

---