Which of the following combination represents the correct matching of metals with the most commonly employed ores for their extraction ?

Options

A. `{:(Fe,Zn,Cu,Al,),("Haematite","Sphalerite",underset("pyrites")("Copper"),"Bauxite",):}`
B. `{:(Fe,Zn,Cu,Al,),("Iron pyrites","Zincite","Cuprite","Clay",):}`
C. `{:(Fe,Zn,Cu,Al,),("Siderite","Calamine","Malachite",underset("phosphate")"Clay",):}`
D. `{:(Fe,Zn,Cu,Al,),("Chalcocite","Magnetite",underset("glance")"Copper","Bauxite",):}`

Answer

To solve the question regarding the correct matching of metals with their commonly employed ores for extraction, we will follow these steps:

### Step 1: Identify the metals and their commonly employed ores
1. **Iron (Fe)**: The most commonly employed ore for iron extraction is **Hematite**, which has the chemical formula **Fe2O3**.

2. **Zinc (Zn)**: The common ore for zinc is **Sphalerite**, which can be represented by the formula **ZnS** (though it may also contain iron as Zn, Fe, S).

3. **Copper (Cu)**: The primary ore for copper extraction is **Copper Pyrite**, which has the formula **CuFeS2**.

4. **Aluminum (Al)**: The common ore for aluminum is **Bauxite**, represented by the formula **Al2O3·2H2O** (indicating the presence of water molecules of crystallization).

### Step 2: Match the metals with their ores
- Iron → Hematite (Fe2O3)
- Zinc → Sphalerite (ZnS)
- Copper → Copper Pyrite (CuFeS2)
- Aluminum → Bauxite (Al2O3·2H2O)

### Step 3: Analyze the options provided
Assuming the options are given in a multiple-choice format, we would look for the option that correctly matches the metals with their respective ores based on the information gathered.

### Step 4: Conclusion
The correct matching of metals with their commonly employed ores for extraction is found in **Option A**.

### Final Answer
The correct combination representing the metals with their commonly employed ores is **Option A**.

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