The ore which is concentrated wetting by oil is :

Options

A. oxide ore
B. sulphate ore
C. carbonate ore
D. sulphide ore

Answer

To solve the question "The ore which is concentrated wetting by oil is:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which type of ore is concentrated using a method that involves wetting by oil.

2. **Identifying the Concentration Method**: The method that uses oil for concentration is known as the froth flotation process. This process is primarily used for the concentration of certain types of ores.

3. **Recognizing the Type of Ore**: In the froth flotation process, the ores that are concentrated are typically sulphide ores. This is because sulphide ores have a tendency to be wetted by oil, while the impurities (gangue) are wetted by water.

4. **Mechanism of Froth Flotation**: In this process:
- A mixture of finely divided ore and water is created.
- Pine oil (or another oil) is added to the mixture.
- Air is introduced into the mixture, creating froth.
- The sulphide ore particles attach to the air bubbles and rise to the surface, forming a froth.
- The impurities remain in the water and can be removed.

5. **Conclusion**: Based on the above understanding, we conclude that the ore which is concentrated by wetting with oil is sulphide ore.

### Final Answer:
The ore which is concentrated wetting by oil is **sulphide ore**.

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