Which of the following is viable particulate pollutant?

Options

A. Mist
B. Dust
C. Smoke
D. Fungl

Answer

To determine which of the following is a viable particulate pollutant, we need to understand the definitions of the terms involved:

1. **Viable**: This term refers to something that is capable of living or growing. In the context of pollutants, it means that the pollutant is a living organism.

2. **Particulate Pollutant**: This refers to tiny particles or droplets in the air that can cause pollution. These particles can be solid or liquid and are often measured in micrometers.

Now, let's analyze the options provided:

1. **Mist**: Mist consists of tiny droplets of water suspended in the air. It is non-living and therefore not a viable particulate pollutant.

2. **Dust**: Dust is made up of tiny solid particles that are often composed of various materials like soil, pollen, and human-made substances. Dust is also non-living, making it a non-viable particulate pollutant.

3. **Smoke**: Smoke is a collection of tiny solid, liquid, or mixed particles that are produced by combustion. Since smoke is composed of non-living particles, it is not a viable particulate pollutant.

4. **Fungi**: Fungi are living organisms that can exist in various forms, including spores, which are tiny and can be airborne. As living organisms, fungi can cause pollution, especially in terms of health effects when inhaled.

Based on this analysis, the viable particulate pollutant among the options is:

**Correct Answer: Fungi (Option 4)**