A pollutants that causes irritation in eyes, throat and nose

Options

A. CO
B. `SO_(2)`
C. `CH_(4)`
D. Chlorofluorocarbons.

Answer

To solve the question regarding which pollutant causes irritation in the eyes, throat, and nose, we can follow these steps:

### Step 1: Identify the Options
The options given are:
1. Carbon monoxide (CO)
2. Sulfur dioxide (SO2)
3. Methane (CH4)
4. Chlorofluorocarbons (CFCs)

### Step 2: Analyze Each Option
- **Carbon monoxide (CO)**: This pollutant is known for causing health issues like blue baby syndrome due to its reaction with hemoglobin, leading to oxygen deficiency in red blood cells. It does not primarily cause irritation in the eyes, throat, or nose.

- **Sulfur dioxide (SO2)**: This is a well-known air pollutant that can cause irritation in the respiratory tract, eyes, throat, and nose. It is commonly associated with respiratory problems and is a significant concern in air quality.

- **Methane (CH4)**: Methane is a greenhouse gas and does not typically cause irritation in the eyes, throat, or nose. It is more related to climate change than direct health effects from irritation.

- **Chlorofluorocarbons (CFCs)**: CFCs are primarily known for their role in ozone depletion and do not cause irritation when inhaled. They can be harmful in high concentrations but do not cause immediate irritation.

### Step 3: Conclusion
Based on the analysis, the pollutant that causes irritation in the eyes, throat, and nose is **sulfur dioxide (SO2)**. Therefore, the correct answer is option 2.

### Final Answer
The pollutant that causes irritation in the eyes, throat, and nose is **sulfur dioxide (SO2)**.

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