Certified Environmental Manager (CEM)

Which of the following is NOT one of the six criteria air pollutants regulated under NAAQS?

Carbon monoxide (CO) Nitrogen dioxide (NO₂) Hydrogen sulfide (H₂S) Particulate matter (PM2.5)

Hydrogen sulfide (H₂S)

Access more questions from this quiz

Continue to Certified Environmental Manager (CEM) for more practice questions and the full quiz experience.