Metals which can be extracted by smelting process are :

Options

A. Pb
B. Fe
C. Zn
D. Al

Answer

To determine which metals can be extracted by the smelting process, we need to analyze the properties of the given metals: Lead, Iron, Zinc, and Aluminium.

### Step-by-Step Solution:

1. **Understanding Smelting**:
- Smelting is a process used to extract metals from their oxides by reduction, typically using carbon (coke) as a reducing agent. The general reaction involves the metal oxide being reduced to the metal and carbon dioxide being produced.

2. **Analyzing Each Metal**:
- **Lead**:
- Lead can be extracted from its oxide (Lead(II) oxide, PbO) by reduction with carbon. The reaction is:
\[ \text{PbO} + \text{C} \rightarrow \text{Pb} + \text{CO} \]
- Therefore, Lead can be extracted by smelting.

- **Iron**:
- Iron is extracted from its oxide (Iron(III) oxide, Fe2O3) using carbon. The reaction is:
\[ \text{Fe2O3} + 3\text{C} \rightarrow 2\text{Fe} + 3\text{CO} \]
- Thus, Iron can also be extracted by smelting.

- **Zinc**:
- Zinc can be extracted from its oxide (Zinc oxide, ZnO) through reduction with carbon. The reaction is:
\[ \text{ZnO} + \text{C} \rightarrow \text{Zn} + \text{CO} \]
- Hence, Zinc can be extracted by smelting.

- **Aluminium**:
- Aluminium has a high reducing power and is highly electropositive. It cannot be extracted by smelting. Instead, it is extracted from its oxide (Aluminium oxide, Al2O3) through electrolysis. The reaction involves:
\[ \text{Al2O3} \rightarrow 2\text{Al} + \text{O2} \]
- Therefore, Aluminium cannot be extracted by smelting.

3. **Conclusion**:
- The metals that can be extracted by the smelting process from the given options are Lead, Iron, and Zinc. Aluminium cannot be extracted by smelting.

### Final Answer:
The metals which can be extracted by the smelting process are Lead, Iron, and Zinc.

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