Which of the following is not a viable particulates?

Options

A. Bacteria
B. Fungl
C. Moulds
D. Mist

Answer

To determine which of the following is not a viable particulate, we first need to understand what "viable particulate" means.

### Step 1: Define Viable Particulate
- **Viable** means living.
- **Particulate** refers to extremely small substances that can contribute to pollution.

Thus, a viable particulate is a living organism that is small enough to be considered a pollutant.

### Step 2: Analyze the Options
Now, let's examine the options provided:

1. **Bacteria**:
- Bacteria are living organisms and can contribute to pollution. Therefore, they are viable particulates.

2. **Fungi**:
- Fungi are also living organisms that can cause pollution. Hence, they are viable particulates.

3. **Mold**:
- Mold is a type of fungi and is a living organism that can also contribute to pollution. Thus, it is a viable particulate.

4. **Mist**:
- Mist is not a living organism; it is a collection of tiny water droplets in the air. Therefore, it is non-viable.

### Step 3: Conclusion
Based on the analysis, the only option that is not a viable particulate is **mist**.

The correct answer is **Option 4: Mist**.

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