Sulphide ore is

Options

A. copper pyrites
B. malachite
C. haematite
D. magnesite

Answer

To determine which of the given ores is a sulphide ore, we will analyze each option based on their chemical formulas and the presence of sulphur.

### Step-by-Step Solution:

1. **Understand the Definition of Sulphide Ore**:
- A sulphide ore is a type of ore that contains sulphur in its chemical composition. These ores typically contain metals combined with sulphur.

2. **List the Given Ores**:
- The ores provided are:
- Copper pyrite
- Malachite
- Hematite
- Magnesite

3. **Analyze Each Ore**:
- **Copper Pyrite (CuFeS2)**:
- This ore contains sulphur (S) in its formula. Therefore, it is classified as a sulphide ore.
- **Malachite (CuCO3·Cu(OH)2)**:
- This ore does not contain sulphur; it contains carbonate and hydroxide. Thus, it is not a sulphide ore.
- **Hematite (Fe2O3)**:
- This ore contains oxygen (O) and does not have sulphur. It is classified as an oxidized ore, not a sulphide ore.
- **Magnesite (MgCO3)**:
- This ore also does not contain sulphur; it is a carbonate mineral. Therefore, it is not a sulphide ore.

4. **Conclusion**:
- Among the listed ores, only **Copper Pyrite (CuFeS2)** is a sulphide ore.

### Final Answer:
- The sulphide ore is **Copper Pyrite (CuFeS2)**.

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