Nevada Air Pollution Control Technician Exam 2 Practice 200 Questions with
Verified Answers and Rationales (2026 Edition) About the Exam
Exam Overview & Tips
This exam is designed to test your knowledge of the Clean Air Act (CAA) , Nevada
Administrative Code (NAC) 445B , and practical field protocols for the Nevada
Division of Environmental Protection (NDEP). Expect questions on Malfunction
Abatement Plans (MAPs), Continuous Emission Monitoring Systems (CEMS), New
Source Review (NSR) permits, and PM-10 regulations specific to Nevada's arid
climate.
Section 1: Core Concepts & Criteria Pollutants (Questions 1-40)
1. What is the primary source of Particulate Matter (PM2.5) in urban areas like Las
Vegas?
A) Carbon monoxide
B) Vehicle emissions
C) Ozone
D) Sulfur dioxide
Answer: B) Vehicle emissions
,Rationale: Combustion of fossil fuels in vehicles (gasoline and diesel, specifically)
is a major source of fine particulate matter in cities .
2. Which pollutant is primarily responsible for acid rain?
A) Carbon monoxide
B) Sulfur dioxide
C) Ozone
D) Methane
Answer: B) Sulfur dioxide
Rationale: SO2 reacts with water vapor in the atmosphere to form sulfuric acid,
leading to acid deposition .
3. What is the main health effect of prolonged exposure to Nitrogen Oxides
(NOx)?
A) Skin irritation
B) Respiratory issues
C) Hair loss
D) Hearing loss
,Answer: B) Respiratory issues
Rationale: NOx causes inflammation of the respiratory tract, aggravates asthma,
and increases susceptibility to respiratory infections .
4. What is the main component of photochemical smog?
A) Ozone
B) Carbon dioxide
C) Methane
D) Lead
Answer: A) Ozone
*Rationale: Ground-level ozone (O3) is formed by the reaction of NOx and VOCs
in the presence of sunlight and is the primary component of smog .*
5. Which gas is most associated with global warming and is specifically regulated
under federal climate initiatives?
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Argon
, Answer: C) Carbon dioxide
Rationale: CO2 traps infrared radiation, contributing to the greenhouse effect.
6. What does AQI stand for?
A) Air Quality Index
B) Atmospheric Quantity Indicator
C) Air Quality Inspection
D) Acid Quality Index
Answer: A) Air Quality Index
Rationale: The AQI measures and reports daily air pollution levels to the public,
indicating health risk levels .
7. Which pollutant contributes to the depletion of the stratospheric ozone layer?
A) Nitrogen dioxide
B) Chlorofluorocarbons (CFCs)
C) Carbon monoxide
D) Sulfur dioxide
Verified Answers and Rationales (2026 Edition) About the Exam
Exam Overview & Tips
This exam is designed to test your knowledge of the Clean Air Act (CAA) , Nevada
Administrative Code (NAC) 445B , and practical field protocols for the Nevada
Division of Environmental Protection (NDEP). Expect questions on Malfunction
Abatement Plans (MAPs), Continuous Emission Monitoring Systems (CEMS), New
Source Review (NSR) permits, and PM-10 regulations specific to Nevada's arid
climate.
Section 1: Core Concepts & Criteria Pollutants (Questions 1-40)
1. What is the primary source of Particulate Matter (PM2.5) in urban areas like Las
Vegas?
A) Carbon monoxide
B) Vehicle emissions
C) Ozone
D) Sulfur dioxide
Answer: B) Vehicle emissions
,Rationale: Combustion of fossil fuels in vehicles (gasoline and diesel, specifically)
is a major source of fine particulate matter in cities .
2. Which pollutant is primarily responsible for acid rain?
A) Carbon monoxide
B) Sulfur dioxide
C) Ozone
D) Methane
Answer: B) Sulfur dioxide
Rationale: SO2 reacts with water vapor in the atmosphere to form sulfuric acid,
leading to acid deposition .
3. What is the main health effect of prolonged exposure to Nitrogen Oxides
(NOx)?
A) Skin irritation
B) Respiratory issues
C) Hair loss
D) Hearing loss
,Answer: B) Respiratory issues
Rationale: NOx causes inflammation of the respiratory tract, aggravates asthma,
and increases susceptibility to respiratory infections .
4. What is the main component of photochemical smog?
A) Ozone
B) Carbon dioxide
C) Methane
D) Lead
Answer: A) Ozone
*Rationale: Ground-level ozone (O3) is formed by the reaction of NOx and VOCs
in the presence of sunlight and is the primary component of smog .*
5. Which gas is most associated with global warming and is specifically regulated
under federal climate initiatives?
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Argon
, Answer: C) Carbon dioxide
Rationale: CO2 traps infrared radiation, contributing to the greenhouse effect.
6. What does AQI stand for?
A) Air Quality Index
B) Atmospheric Quantity Indicator
C) Air Quality Inspection
D) Acid Quality Index
Answer: A) Air Quality Index
Rationale: The AQI measures and reports daily air pollution levels to the public,
indicating health risk levels .
7. Which pollutant contributes to the depletion of the stratospheric ozone layer?
A) Nitrogen dioxide
B) Chlorofluorocarbons (CFCs)
C) Carbon monoxide
D) Sulfur dioxide
