Georgia Indoor Air Quality Technician Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of an Indoor Air Quality (IAQ)
technician?
a) Installing HVAC systems
b) Assessing and improving indoor air quality
c) Designing building layouts
d) Testing water quality
IAQ technicians focus on identifying and mitigating air quality
issues to protect occupant health.
2. Which of the following is considered a common indoor air
pollutant?
a) Lead in paint
b) Volatile organic compounds (VOCs)
c) Pesticides in soil
d) Asbestos only in insulation
VOCs are chemicals that evaporate easily and can accumulate
indoors, affecting air quality.
3. The most effective way to reduce indoor radon levels is:
a) Installing HEPA filters
b) Sealing foundation cracks and using sub-slab depressurization
, c) Increasing indoor humidity
d) Using air fresheners
Radon mitigation typically involves preventing soil gas from
entering buildings and venting it outside.
4. What type of filter is most effective at removing fine airborne
particles like dust and pollen?
a) Carbon filter
b) HEPA filter
c) Foam filter
d) UV-C filter
HEPA filters can trap 99.97% of particles 0.3 microns or larger.
5. Carbon monoxide is dangerous because:
a) It causes mold growth
b) It binds to hemoglobin, reducing oxygen transport
c) It triggers asthma attacks
d) It corrodes metal pipes
CO is colorless, odorless, and can cause poisoning by preventing
oxygen delivery to tissues.
6. Which indoor environment factor most commonly promotes mold
growth?
a) High temperature
b) High humidity or moisture
c) Low light
d) Low CO2 levels
Mold requires moisture to grow, so controlling humidity is key.
7. The first step in an IAQ assessment is usually:
a) Installing air purifiers
, b) Conducting a visual inspection and gathering building
information
c) Measuring CO2 levels immediately
d) Applying disinfectants
Understanding the building layout, occupant complaints, and
potential sources is critical before testing.
8. A commonly used instrument to measure formaldehyde in indoor
air is:
a) Thermohygrometer
b) Photoionization detector (PID)
c) Carbon monoxide detector
d) Manometer
PIDs can detect VOCs including formaldehyde at low
concentrations.
9. What is the recommended indoor relative humidity range to
minimize mold growth?
a) 10–20%
b) 25–30%
c) 30–50%
d) 60–70%
Maintaining humidity between 30–50% limits mold proliferation
while keeping air comfortable.
10. Which of the following is a primary cause of poor indoor air
circulation?
a) Excessive lighting
b) Clogged or improperly sized HVAC ducts
c) Carpeted floors
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of an Indoor Air Quality (IAQ)
technician?
a) Installing HVAC systems
b) Assessing and improving indoor air quality
c) Designing building layouts
d) Testing water quality
IAQ technicians focus on identifying and mitigating air quality
issues to protect occupant health.
2. Which of the following is considered a common indoor air
pollutant?
a) Lead in paint
b) Volatile organic compounds (VOCs)
c) Pesticides in soil
d) Asbestos only in insulation
VOCs are chemicals that evaporate easily and can accumulate
indoors, affecting air quality.
3. The most effective way to reduce indoor radon levels is:
a) Installing HEPA filters
b) Sealing foundation cracks and using sub-slab depressurization
, c) Increasing indoor humidity
d) Using air fresheners
Radon mitigation typically involves preventing soil gas from
entering buildings and venting it outside.
4. What type of filter is most effective at removing fine airborne
particles like dust and pollen?
a) Carbon filter
b) HEPA filter
c) Foam filter
d) UV-C filter
HEPA filters can trap 99.97% of particles 0.3 microns or larger.
5. Carbon monoxide is dangerous because:
a) It causes mold growth
b) It binds to hemoglobin, reducing oxygen transport
c) It triggers asthma attacks
d) It corrodes metal pipes
CO is colorless, odorless, and can cause poisoning by preventing
oxygen delivery to tissues.
6. Which indoor environment factor most commonly promotes mold
growth?
a) High temperature
b) High humidity or moisture
c) Low light
d) Low CO2 levels
Mold requires moisture to grow, so controlling humidity is key.
7. The first step in an IAQ assessment is usually:
a) Installing air purifiers
, b) Conducting a visual inspection and gathering building
information
c) Measuring CO2 levels immediately
d) Applying disinfectants
Understanding the building layout, occupant complaints, and
potential sources is critical before testing.
8. A commonly used instrument to measure formaldehyde in indoor
air is:
a) Thermohygrometer
b) Photoionization detector (PID)
c) Carbon monoxide detector
d) Manometer
PIDs can detect VOCs including formaldehyde at low
concentrations.
9. What is the recommended indoor relative humidity range to
minimize mold growth?
a) 10–20%
b) 25–30%
c) 30–50%
d) 60–70%
Maintaining humidity between 30–50% limits mold proliferation
while keeping air comfortable.
10. Which of the following is a primary cause of poor indoor air
circulation?
a) Excessive lighting
b) Clogged or improperly sized HVAC ducts
c) Carpeted floors
