Which of the following pairs consists of ore the same metal ?

Options

A. Magnesite, cerussite
B. Chalcocite, copper pyrites
C. Bauxite, corundum
D. Anglesite, cerussite

Explanation

To solve the question "Which of the following pairs consists of ore of the same metal?", we will analyze the given options by identifying the metals present in each ore.

### Step-by-Step Solution:

1. **Identify the Ores and Their Formulas**:
- **Option A**: Magnesite and Cerusite
- Magnesite: \( \text{MgCO}_3 \) (contains Magnesium)
- Cerusite: \( \text{PbCO}_3 \) (contains Lead)

2. **Check for Common Metals in Option A**:
- Magnesite contains Magnesium (Mg) and Cerusite contains Lead (Pb).
- **Conclusion**: Different metals are present. This option is not correct.

3. **Identify the Ores in Option B**:
- **Option B**: Chalcocite and Copper Pyrite
- Chalcocite: \( \text{Cu}_2\text{S} \) (contains Copper)
- Copper Pyrite: \( \text{CuFeS}_2 \) (contains Copper and Iron)

4. **Check for Common Metals in Option B**:
- Both ores contain Copper (Cu).
- **Conclusion**: Same metal is present. This option is correct.

5. **Identify the Ores in Option C**:
- **Option C**: Bauxite and Corundum
- Bauxite: \( \text{Al}_2\text{O}_3 \cdot \text{nH}_2\text{O} \) (contains Aluminum)
- Corundum: \( \text{Al}_2\text{O}_3 \) (contains Aluminum)

6. **Check for Common Metals in Option C**:
- Both ores contain Aluminum (Al).
- **Conclusion**: Same metal is present. This option is correct.

7. **Identify the Ores in Option D**:
- **Option D**: Anglesite and Cerusite
- Anglesite: \( \text{PbSO}_4 \) (contains Lead)
- Cerusite: \( \text{PbCO}_3 \) (contains Lead)

8. **Check for Common Metals in Option D**:
- Both ores contain Lead (Pb).
- **Conclusion**: Same metal is present. This option is correct.

### Final Answer:
The pairs that consist of ores of the same metal are:
- **Option B**: Chalcocite and Copper Pyrite (Copper)
- **Option C**: Bauxite and Corundum (Aluminum)
- **Option D**: Anglesite and Cerusite (Lead)

Thus, the correct options are B, C, and D.