Q. Which of the following is a secondary pollutant?

 147  157 NTA AbhyasNTA Abhyas 2022 Report Error

Solution:

is a secondary pollutant. It is called 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)