The maximum temperature `1550^(@)C` is obtained in the _____ region of the blast furnace used in the the extraction of iron.

Options

A. reduction
B. fusion
C. combustion
D. slag formation

Answer

To answer the question regarding the maximum temperature of `1550°C` obtained in the blast furnace used for the extraction of iron, we can follow these steps:

### Step 1: Understand the Zones of the Blast Furnace
The blast furnace has several zones, each with specific reactions and temperature ranges. The main zones are:
1. Zone of Combustion
2. Zone of Fusion
3. Zone of Slag Formation
4. Zone of Reduction

### Step 2: Identify the Temperature in Each Zone
- **Zone of Combustion**: This is the uppermost zone where carbon reacts with oxygen to produce carbon dioxide. The temperature here can reach approximately `2173 K` (or about `1900°C`), which is the highest temperature in the furnace.
- **Zone of Fusion**: In this zone, carbon dioxide reacts with carbon to form carbon monoxide. The temperature here is around `1673 K` (or about `1400°C`).
- **Zone of Slag Formation**: This zone involves the formation of slag from calcium carbonate and silica. The temperature is lower than that of the combustion zone.
- **Zone of Reduction**: In this zone, iron oxides are reduced to iron using carbon monoxide. The temperature is also lower than the combustion zone.

### Step 3: Determine the Maximum Temperature
From the information gathered, the maximum temperature of `1550°C` is specifically reached in the **Zone of Combustion**. This is where the combustion of carbon occurs, producing the highest temperatures necessary for the extraction of iron.

### Conclusion
The maximum temperature of `1550°C` is obtained in the **Zone of Combustion** of the blast furnace used in the extraction of iron.

### Final Answer
**Zone of Combustion**

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