Qualitative pollutants are

Options

A. added by man
B. naturally occurring
C. present in the High concentration
D. none of these

Answer

### Step-by-Step Solution:

1. **Understanding Pollutants**:
- Pollutants can be categorized based on their origin and concentration in the environment. The two main types are quantitative pollutants and qualitative pollutants.

2. **Defining Quantitative Pollutants**:
- Quantitative pollutants are substances that are naturally present in the environment. They become pollutants when their concentration increases beyond normal levels.
- Example: Carbon dioxide is a natural component of the atmosphere, but when its levels rise significantly due to human activities, it is considered a pollutant.

3. **Defining Qualitative Pollutants**:
- Qualitative pollutants, on the other hand, are substances that are not typically found in the environment. They are introduced through human activities and are present in very low amounts.
- Examples include insecticides and pesticides, which are man-made chemicals not normally found in nature.

4. **Analyzing the Options**:
- The options given in the question are:
- A) Added by man
- B) Naturally occurring
- C) Present in high concentration
- D) None of these
- Based on the definitions:
- A) "Added by man" is correct for qualitative pollutants.
- B) "Naturally occurring" is incorrect as qualitative pollutants are not naturally present.
- C) "Present in high concentration" is also incorrect since qualitative pollutants are present in low amounts.
- D) "None of these" is incorrect because option A is correct.

5. **Conclusion**:
- The correct answer is that qualitative pollutants are those that are **added by man**.