Consider the following statements and identify the correct one s 1 Quantitative pollutants are those...........

Environment and Ecology Air Pollution

Consider the following statements and identify the correct one/s

1. Quantitative pollutants are those pollutants which do not normally occur in the environment but are passed into it through human activity.

2. Qualitative pollutants become pollutants only when their concentration reaches beyond a threshold value.

3. CO2 is an example of quantitative pollutant.

Select the correct answer using ocdes given below

1 and 2 only

1 and 3 only

3 only

2 only

First statement is incorrect. Quantitative Pollutants- The substances which are already present in the environment, but are termed as pollutants when their concentration (quantity) increases in the environment. E.g. CO2 is present in the environment in greater quantity than normal and is hence termed as a quantitative pollutant.
Second statement is incorrect. Qualitative Pollutants- They are pollutants which do not normally occur in the environment but are passed into it through human activity, e.g., DDT and other pesticides, fungicides, herbicides, etc.