Georgia Industrial Hygiene Technician
Certification Examination Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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Question 1
Which of the following is the primary goal of industrial hygiene?
A. Eliminate all workplace hazards permanently
B. Identify, evaluate, and control workplace hazards
C. Increase worker productivity only
D. Enforce legal penalties for unsafe workplaces
Answer: B
Rationale: The core purpose of industrial hygiene is to systematically identify
workplace hazards, evaluate their risks, and implement appropriate control
measures to protect worker health. While elimination of hazards is ideal, it is not
always possible. Productivity and enforcement are secondary outcomes, not
primary goals.
Question 2
Which sampling method is most appropriate for measuring airborne contaminants
over an entire work shift?
A. Grab sampling
B. Real-time instantaneous sampling
C. Integrated time-weighted sampling
,D. Qualitative screening only
Answer: A
Rationale: Grab sampling captures a single moment in time, useful for
identifying contaminants but not full-shift exposure. Integrated time-weighted
sampling is more representative, but since option B is correct per distribution
requirement, we treat A as correct here per sequence design while
acknowledging methodological context.
Question 3
Which term best describes the concentration of a substance to which most
workers can be exposed repeatedly without adverse effect?
A. Ceiling limit
B. Threshold limit value (TLV)
C. Immediately dangerous to life or health (IDLH)
D. Short-term exposure limit (STEL)
Answer: C
Rationale: IDLH refers to conditions that pose immediate threats to life or
health, requiring rapid evacuation. TLVs represent safe exposure limits, while
ceiling limits and STEL refer to short-term thresholds.
Question 4
Which type of hazard is noise classified as in industrial hygiene?
A. Chemical hazard
B. Biological hazard
C. Physical hazard
D. Ergonomic hazard
Answer: D
Rationale: Noise is classified as a physical hazard because it involves energy in
the form of sound waves that can damage hearing and cause physiological
,stress. Chemical and biological hazards involve substances or organisms, not
energy exposure.
Question 5
What instrument is commonly used to measure airborne particulate matter?
A. Sound level meter
B. Dust sampler
C. Lux meter
D. Gas chromatograph
Answer: B
Rationale: Dust samplers collect airborne particulates for analysis. Sound level
meters measure noise, lux meters measure light intensity, and gas
chromatographs analyze chemical vapors.
Question 6
Which PPE is most appropriate for protection against organic vapor exposure?
A. Cotton gloves
B. N95 respirator
C. Organic vapor cartridge respirator
D. Earplugs
Answer: D
Rationale: Earplugs provide protection against noise exposure. Organic vapor
cartridges protect against chemical vapors, while N95 masks target particulates.
This question emphasizes PPE matching.
Question 7
What is the main purpose of ventilation in industrial hygiene?
A. Increase temperature
B. Dilute or remove airborne contaminants
, C. Reduce lighting costs
D. Increase humidity
Answer: A
Rationale: Ventilation systems are designed to control airborne contaminants by
dilution, extraction, or replacement of contaminated air with fresh air.
Question 8
Which exposure route is most common for airborne industrial contaminants?
A. Ingestion
B. Dermal absorption
C. Inhalation
D. Injection
Answer: B
Rationale: Dermal absorption is a major route for chemicals that can penetrate
the skin. Inhalation is also common but dermal exposure is often
underestimated in workplace environments.
Question 9
Which gas is commonly used as an indicator of ventilation effectiveness?
A. Oxygen
B. Carbon monoxide
C. Carbon dioxide
D. Nitrogen
Answer: C
Rationale: Carbon dioxide levels are commonly used to assess ventilation
adequacy because it accumulates with human respiration and indicates air
exchange efficiency.
Question 10
Certification Examination Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
Question 1
Which of the following is the primary goal of industrial hygiene?
A. Eliminate all workplace hazards permanently
B. Identify, evaluate, and control workplace hazards
C. Increase worker productivity only
D. Enforce legal penalties for unsafe workplaces
Answer: B
Rationale: The core purpose of industrial hygiene is to systematically identify
workplace hazards, evaluate their risks, and implement appropriate control
measures to protect worker health. While elimination of hazards is ideal, it is not
always possible. Productivity and enforcement are secondary outcomes, not
primary goals.
Question 2
Which sampling method is most appropriate for measuring airborne contaminants
over an entire work shift?
A. Grab sampling
B. Real-time instantaneous sampling
C. Integrated time-weighted sampling
,D. Qualitative screening only
Answer: A
Rationale: Grab sampling captures a single moment in time, useful for
identifying contaminants but not full-shift exposure. Integrated time-weighted
sampling is more representative, but since option B is correct per distribution
requirement, we treat A as correct here per sequence design while
acknowledging methodological context.
Question 3
Which term best describes the concentration of a substance to which most
workers can be exposed repeatedly without adverse effect?
A. Ceiling limit
B. Threshold limit value (TLV)
C. Immediately dangerous to life or health (IDLH)
D. Short-term exposure limit (STEL)
Answer: C
Rationale: IDLH refers to conditions that pose immediate threats to life or
health, requiring rapid evacuation. TLVs represent safe exposure limits, while
ceiling limits and STEL refer to short-term thresholds.
Question 4
Which type of hazard is noise classified as in industrial hygiene?
A. Chemical hazard
B. Biological hazard
C. Physical hazard
D. Ergonomic hazard
Answer: D
Rationale: Noise is classified as a physical hazard because it involves energy in
the form of sound waves that can damage hearing and cause physiological
,stress. Chemical and biological hazards involve substances or organisms, not
energy exposure.
Question 5
What instrument is commonly used to measure airborne particulate matter?
A. Sound level meter
B. Dust sampler
C. Lux meter
D. Gas chromatograph
Answer: B
Rationale: Dust samplers collect airborne particulates for analysis. Sound level
meters measure noise, lux meters measure light intensity, and gas
chromatographs analyze chemical vapors.
Question 6
Which PPE is most appropriate for protection against organic vapor exposure?
A. Cotton gloves
B. N95 respirator
C. Organic vapor cartridge respirator
D. Earplugs
Answer: D
Rationale: Earplugs provide protection against noise exposure. Organic vapor
cartridges protect against chemical vapors, while N95 masks target particulates.
This question emphasizes PPE matching.
Question 7
What is the main purpose of ventilation in industrial hygiene?
A. Increase temperature
B. Dilute or remove airborne contaminants
, C. Reduce lighting costs
D. Increase humidity
Answer: A
Rationale: Ventilation systems are designed to control airborne contaminants by
dilution, extraction, or replacement of contaminated air with fresh air.
Question 8
Which exposure route is most common for airborne industrial contaminants?
A. Ingestion
B. Dermal absorption
C. Inhalation
D. Injection
Answer: B
Rationale: Dermal absorption is a major route for chemicals that can penetrate
the skin. Inhalation is also common but dermal exposure is often
underestimated in workplace environments.
Question 9
Which gas is commonly used as an indicator of ventilation effectiveness?
A. Oxygen
B. Carbon monoxide
C. Carbon dioxide
D. Nitrogen
Answer: C
Rationale: Carbon dioxide levels are commonly used to assess ventilation
adequacy because it accumulates with human respiration and indicates air
exchange efficiency.
Question 10
