|Pollutants can be classified as primary and secondary. Which of these is/are primary pollutant?|
|1. Volatile Organic Compounds|
|2. Ground Level Ozone|
|3. Acid Rain|
|Select the correct answer using the codes given below.|
A) 1 only
B) 1 and 2 only
C) 1 and 3 only
D) 1, 2 and 3
Correct Answer: A
Solution :[a] A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere. Ground Level Ozone is a "secondary" pollutant because it is produced when two primary pollutants react in sunlight and stagnant air. These two primary pollutants are nitrogen oxides \[(NOx)\] and volatile organic compounds (VOCs). Acid rain is a secondary pollutant.
You need to login to perform this action.
You will be redirected in 3 sec