Froth floatation process for the concentration of sulphide ore is an illustration of the practical application of

Options

A. adsorption
B. absorption
C. sedimentation
D. coagulation

Answer

### Step-by-Step Solution:

1. **Understanding Froth Flotation Process**:
- The froth flotation process is primarily used for the concentration of sulphide ores. In this process, the ore particles are treated with a mixture of water and chemicals, which allows them to become hydrophobic (water-repelling).

2. **Wetting of Ore Particles**:
- In the froth flotation process, the ore particles are wetted by oil. This hydrophobic treatment causes the ore particles to stick to air bubbles introduced into the mixture.

3. **Rising of Ore with Froth**:
- Once the ore particles adhere to the air bubbles, they rise to the surface of the flotation cell along with the froth. This is where the concentration of the desired ore occurs.

4. **Separation from Impurities**:
- The impurities, which are hydrophilic (water-attracting), do not adhere to the air bubbles and therefore do not rise with the froth. This results in a separation of the concentrated ore from the impurities.

5. **Role of Adsorption**:
- The process of ore particles sticking to the surface of the air bubbles is an example of adsorption. In adsorption, particles adhere to the surface without penetrating it, which is exactly what happens in the froth flotation process.

6. **Conclusion**:
- Therefore, the froth flotation process for the concentration of sulphide ore is an illustration of the practical application of **adsorption**.