L7 AIR POLLUTION EXAM QUESTIONS
AND ANSWERS 100% PASS
What is air pollution? - ANS A contamination of the atmospheric environment that causes
harm.
What are primary air pollutants? - ANS Pollutants emitted directly into the atmosphere, such
as carbon monoxide from vehicles.
What are secondary air pollutants? - ANS Pollutants formed by chemical reactions in the
atmosphere, like ozone from VOCs and nitrogen oxides.
What are natural sources of air pollution? - ANS Volcanoes, fires, oceans, dust, pollen, plants,
and microbes.
What are anthropogenic sources of air pollution? - ANS Pollution caused by human activities,
such as industrial processes and transportation.
What is global air pollution? - ANS Issues like climate change and stratospheric ozone
depletion affecting the entire planet.
What is regional air pollution? - ANS Pollution that affects larger areas, such as acid rain and
regional smog transport.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is local air pollution? - ANS Pollution affecting specific urban areas, such as urban smog.
What are the major outdoor air pollutants? - ANS Carbon oxides, nitrogen oxides, sulfur
dioxide, particulate matter, ozone, and volatile organic compounds.
What is particulate matter (PM)? - ANS Suspended particles in the air, including fine and
ultrafine particles.
What is the chemical reaction for carbon monoxide formation? - ANS 2C + O2 → 2CO
What is the chemical reaction for carbon dioxide formation? - ANS C + O2 → CO2
What is the impact of air pollutants on human health? - ANS Air pollutants can cause
respiratory issues, cardiovascular diseases, and other health problems.
What is the Air Quality Health Index (AQHI)? - ANS A tool used to inform Canadians about
health risks associated with local air pollution levels.
What are the three levels of air quality objectives in Canada? - ANS Maximum desirable level,
maximum acceptable level, and maximum tolerable level.
What is the maximum desirable level of air quality? - ANS The long-term goal for air quality
to protect unpolluted areas.
What is the maximum acceptable level of air quality? - ANS The concentration level intended
to protect public health and welfare.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
AND ANSWERS 100% PASS
What is air pollution? - ANS A contamination of the atmospheric environment that causes
harm.
What are primary air pollutants? - ANS Pollutants emitted directly into the atmosphere, such
as carbon monoxide from vehicles.
What are secondary air pollutants? - ANS Pollutants formed by chemical reactions in the
atmosphere, like ozone from VOCs and nitrogen oxides.
What are natural sources of air pollution? - ANS Volcanoes, fires, oceans, dust, pollen, plants,
and microbes.
What are anthropogenic sources of air pollution? - ANS Pollution caused by human activities,
such as industrial processes and transportation.
What is global air pollution? - ANS Issues like climate change and stratospheric ozone
depletion affecting the entire planet.
What is regional air pollution? - ANS Pollution that affects larger areas, such as acid rain and
regional smog transport.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is local air pollution? - ANS Pollution affecting specific urban areas, such as urban smog.
What are the major outdoor air pollutants? - ANS Carbon oxides, nitrogen oxides, sulfur
dioxide, particulate matter, ozone, and volatile organic compounds.
What is particulate matter (PM)? - ANS Suspended particles in the air, including fine and
ultrafine particles.
What is the chemical reaction for carbon monoxide formation? - ANS 2C + O2 → 2CO
What is the chemical reaction for carbon dioxide formation? - ANS C + O2 → CO2
What is the impact of air pollutants on human health? - ANS Air pollutants can cause
respiratory issues, cardiovascular diseases, and other health problems.
What is the Air Quality Health Index (AQHI)? - ANS A tool used to inform Canadians about
health risks associated with local air pollution levels.
What are the three levels of air quality objectives in Canada? - ANS Maximum desirable level,
maximum acceptable level, and maximum tolerable level.
What is the maximum desirable level of air quality? - ANS The long-term goal for air quality
to protect unpolluted areas.
What is the maximum acceptable level of air quality? - ANS The concentration level intended
to protect public health and welfare.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
