Question
Chemistry Question on Environmental pollution
Which of the following is secondary pollutant?
A
CO
B
SO2
C
O3
D
CO2
Answer
O3
Explanation
Solution
Secondary pollutants are the type of pollutants formed in the atmosphere. These pollutants are not directly emitted from a source, such as power plants or vehicles.
- Primary pollutants are directly emitted from their sources. For example - CO, CO2, and SO2 are primary pollutants as they are directly emitted from the burning of fossil fuels.
- Pollutants that are formed by reaction amongst the primary pollutants are called secondary pollutants. For example, ozone**** is a secondary pollutant.
Therefore, the correct answer is O 3