Which one of the following pollutants causes irritation in eye?

Options

A. `CO_(2)`
B. `SO_(2)`
C. `NO_(2)`
D. All of these

Answer

To determine which pollutant causes irritation in the eye, we will analyze the effects of each of the given gases: carbon dioxide (CO2), sulfur dioxide (SO2), and nitrogen dioxide (NO2).

### Step-by-Step Solution:

1. **Identify the Pollutants**: The pollutants listed are:
- Carbon Dioxide (CO2)
- Sulfur Dioxide (SO2)
- Nitrogen Dioxide (NO2)

2. **Analyze Carbon Dioxide (CO2)**:
- At lower concentrations, CO2 does not have significant effects on the body.
- Higher concentrations can lead to headaches, dizziness, restlessness, respiratory issues, and central nervous system depression.
- **Conclusion**: CO2 does not specifically cause irritation in the eyes.

3. **Analyze Sulfur Dioxide (SO2)**:
- SO2 is known to be a toxic gas.
- Inhalation of SO2 can cause irritation to the nose, throat, lungs, and notably, the eyes.
- Symptoms include burning eyes, sore throat, running nose, and cough.
- **Conclusion**: SO2 causes irritation in the eyes.

4. **Analyze Nitrogen Dioxide (NO2)**:
- Inhalation of NO2 can lead to coughing and decreased lung function.
- It can also trigger asthma attacks and, in severe cases, may lead to death.
- **Conclusion**: NO2 does not specifically cause irritation in the eyes.

5. **Final Conclusion**: Based on the analysis, the pollutant that causes irritation in the eye is **Sulfur Dioxide (SO2)**.

### Answer:
The pollutant that causes irritation in the eye is **Sulfur Dioxide (SO2)**.

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