Sulphide ore of Iron is-

Options

A. limonite
B. Siderite
C. Pyrites
D. Magnetite

Answer

To determine the sulphide ore of iron from the given options, we will analyze each option based on their chemical formulas and classifications.

### Step-by-Step Solution:

1. **Identify the Options**:
We have four options to consider:
- A: Limonite
- B: Siderite
- C: Pyrites
- D: Magnetite

2. **Analyze Each Option**:
- **Option A: Limonite**
- Formula: FeO·NH2O
- Classification: Hydrated ore of iron (not a sulphide).

- **Option B: Siderite**
- Formula: FeCO3
- Classification: Carbonate ore of iron (not a sulphide).

- **Option C: Pyrites**
- Formula: CuFeS2
- Classification: This contains iron (Fe) and sulphide (S), making it a sulphide ore of iron.

- **Option D: Magnetite**
- Formula: Fe3O4
- Classification: Oxide ore of iron (not a sulphide).

3. **Conclusion**:
After analyzing all the options, we find that **Pyrites (CuFeS2)** is the only ore that contains both iron and sulphide. Therefore, the sulphide ore of iron is **C: Pyrites**.

### Final Answer:
The sulphide ore of iron is **C: Pyrites (CuFeS2)**.

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