Georgia Indoor Air Quality Inspector Exam – Converted

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Georgia Indoor Air Quality Inspector Exam
Practice Test Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1. Which of the following is the most common indoor air pollutant in
residential buildings?
a. Carbon monoxide
b. Radon
c. Volatile organic compounds
d. Asbestos
c. Volatile organic compounds
VOCs are emitted from paints, cleaning supplies, and building materials
and are the most common indoor air pollutants.
2. What is the primary source of carbon monoxide indoors?
a. Mold
b. Gas appliances
c. Pesticides
d. Dust
b. Gas appliances
Incomplete combustion of fuels from gas stoves, heaters, and furnaces
is the main source of indoor CO.
3. Which type of ventilation is most effective for reducing indoor
pollutants?
a. Natural ventilation
b. Mechanical ventilation


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c. Passive ventilation
d. None of the above
b. Mechanical ventilation
Mechanical ventilation systems can control airflow and effectively
reduce indoor air pollutants.
4. Which of the following is a health effect commonly associated
with exposure to mold?
a. Memory loss
b. Allergic reactions
c. Skin cancer
d. Hypertension
b. Allergic reactions
Mold spores can trigger allergic reactions, asthma, and respiratory
irritation.
5. Radon gas is:
a. Easily detected by smell
b. A radioactive gas
c. Harmless in small amounts
d. Only found in urban areas
b. A radioactive gas
Radon is a naturally occurring radioactive gas that can accumulate
indoors, especially in basements.
6. The best method to test for radon levels in a home is:
a. Visual inspection
b. Short-term or long-term radon testing kits




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c. Air flow measurement
d. Mold sampling
b. Short-term or long-term radon testing kits
Radon cannot be seen or smelled, so testing kits are the reliable way to
measure its concentration.
7. What is the main purpose of an air exchange rate measurement?
a. Determine energy efficiency
b. Assess ventilation effectiveness
c. Identify chemical pollutants
d. Detect moisture
b. Assess ventilation effectiveness
Air exchange rate measures how often indoor air is replaced with
outdoor air, which is key to maintaining good IAQ.
8. Which of the following is considered an occupational exposure
limit for formaldehyde?
a. 0.75 ppm
b. 5 ppm
c. 10 ppm
d. 50 ppm
a. 0.75 ppm
OSHA sets the permissible exposure limit (PEL) for formaldehyde at 0.75
ppm over an 8-hour workday.
9. Which particle size is most associated with respiratory health risks
indoors?
a. >10 µm
b. 2.5–10 µm



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c. <2.5 µm
d. >100 µm
c. <2.5 µm
Fine particles (PM2.5) can penetrate deep into the lungs, causing
respiratory and cardiovascular health problems.
10. Which of the following can contribute to elevated indoor
humidity?
a. Air conditioning
b. Poor ventilation
c. Dehumidifiers
d. Low outdoor humidity
b. Poor ventilation
Inadequate ventilation traps moisture indoors, leading to high humidity
and potential mold growth.
11. What is the recommended action if mold is found covering
more than 10 square feet?
a. Use bleach to clean
b. Call a professional remediation service
c. Ignore it
d. Vacuum the area
b. Call a professional remediation service
Large mold infestations require trained professionals to safely remove
mold and prevent spreading.
12. Which gas is produced by incomplete combustion of wood,
charcoal, or gas appliances?
a. Nitrogen



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