Carboxyhaemoglobin complex results due to this pollutant:

Options

A. `CO_(2)`
B. `CO`
C. `H_(2)CO_(3)`
D. `SO_(2)`

Answer

To answer the question regarding the pollutant that results in the formation of the carboxyhemoglobin complex, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Carboxyhemoglobin**:
- Carboxyhemoglobin is a complex formed when carbon monoxide (CO) binds to hemoglobin in the blood. This binding is very stable and prevents hemoglobin from carrying oxygen effectively.

2. **Identifying the Pollutant**:
- The question specifically asks for the pollutant responsible for the formation of carboxyhemoglobin. The primary pollutant that leads to this complex is carbon monoxide.

3. **Differentiating Other Compounds**:
- It is important to differentiate between other compounds that can bind to hemoglobin:
- Carbon dioxide (CO2) forms carbaminohemoglobin, not carboxyhemoglobin.
- Sulfur dioxide (SO2) and hydrogen sulfide (H2S) can form sulfhemoglobin, which is also not related to carboxyhemoglobin.

4. **Conclusion**:
- Therefore, the pollutant that results in the formation of the carboxyhemoglobin complex is carbon monoxide (CO).

### Final Answer:
The pollutant that results in the formation of the carboxyhemoglobin complex is **carbon monoxide (CO)**.

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