Question
Photochemical smog can impact visibility and human health in large metropolitan areas. Primary air pollutants are converted to secondary air pollutants to form smog in these areas. Which of these is most closely associated with being a secondary air pollutant?
Responses
A ozoneozone
B nitrogen oxidenitrogen oxide
C particulate matterparticulate matter
D volatile organic compounds
Responses
A ozoneozone
B nitrogen oxidenitrogen oxide
C particulate matterparticulate matter
D volatile organic compounds
Answers
GPT-4o mini
The air pollutant most closely associated with being a secondary air pollutant is:
**A. ozone**
Ozone (O₃) is formed when primary pollutants, such as nitrogen oxides (NOₓ) and volatile organic compounds (VOCs), react in the presence of sunlight. In contrast, nitrogen oxides, particulate matter, and volatile organic compounds are considered primary pollutants as they are emitted directly from various sources.
**A. ozone**
Ozone (O₃) is formed when primary pollutants, such as nitrogen oxides (NOₓ) and volatile organic compounds (VOCs), react in the presence of sunlight. In contrast, nitrogen oxides, particulate matter, and volatile organic compounds are considered primary pollutants as they are emitted directly from various sources.