Which of the following metal is extracted by using coke and carbon monoxide as reducing agent?

Options

A. Na
B. Cu
C. Fe
D. Al

Answer

To determine which metal is extracted using coke and carbon monoxide as reducing agents, we can follow these steps:

### Step 1: Understand the Reducing Agents
Coke and carbon monoxide are both carbon-based reducing agents commonly used in metallurgical processes. They facilitate the reduction of metal oxides to their respective metals.

### Step 2: Identify Common Metals Extracted with Coke and Carbon Monoxide
The primary metals that are typically extracted using coke and carbon monoxide include:
- Iron
- Zinc
- Lead (to some extent)

However, iron is the most notable metal extracted using these methods.

### Step 3: Review the Extraction Process for Iron
Iron is extracted from its ore, primarily hematite (Fe₂O₃) or magnetite (Fe₃O₄), through a process called smelting. In this process:
- The iron ore is heated in a blast furnace along with coke.
- The coke acts as both a fuel and a reducing agent, while carbon monoxide is produced during the combustion of coke and further reduces the iron oxides.

### Step 4: Conclusion
Based on the above understanding, the metal that is extracted using coke and carbon monoxide as reducing agents is iron.

### Final Answer
The correct answer is **iron**.

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