OSHA 521 – OSHA GUIDE TO INDUSTRIAL HYGIENE
EXAMINATION COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR
JUST RELEASED
1.
Which primary objective of industrial hygiene focuses on identifying workplace
hazards before they cause employee illness or injury?
A. Compensation administration
B. Hazard anticipation and recognition
C. Payroll management
D. Product marketing
Answer: B
Rationale: Industrial hygiene emphasizes anticipating and recognizing hazards
before they negatively affect worker health.
2.
Which route of exposure most commonly allows airborne contaminants to enter a
worker's body during industrial operations?
A. Injection
B. Ingestion
C. Inhalation
D. Absorption through clothing
Answer: C
,Rationale: Inhalation is the most common occupational exposure route for
airborne contaminants such as dusts, vapors, and fumes.
3.
What is the primary purpose of conducting a workplace industrial hygiene survey
before implementing control measures?
A. Increase production quotas
B. Evaluate employee attendance
C. Identify and assess workplace hazards
D. Determine employee salaries
Answer: C
Rationale: Industrial hygiene surveys identify hazards and evaluate exposure
levels before selecting controls.
4.
Which category of hazard includes excessive workplace noise capable of causing
hearing loss over time?
A. Biological hazard
B. Physical hazard
C. Chemical hazard
D. Ergonomic hazard
Answer: B
Rationale: Noise is classified as a physical hazard because it involves energy
affecting workers.
,5.
According to the hierarchy of controls, which method is generally considered
most effective for reducing occupational exposures?
A. Personal protective equipment
B. Administrative controls
C. Engineering controls or elimination
D. Worker training alone
Answer: C
Rationale: Elimination and engineering controls reduce hazards at their source
and are more effective than PPE.
6.
Which occupational exposure limit is published by OSHA and legally enforceable
in workplaces under its jurisdiction?
A. TLV
B. REL
C. PEL
D. BEI
Answer: C
Rationale: OSHA Permissible Exposure Limits (PELs) are regulatory exposure limits
enforceable by law.
7.
What is the primary function of local exhaust ventilation in an industrial hygiene
program?
, A. Increase indoor humidity
B. Capture contaminants near their source
C. Improve workplace aesthetics
D. Reduce employee work hours
Answer: B
Rationale: Local exhaust ventilation removes contaminants before they disperse
into the work environment.
8.
Which industrial hygiene principle involves measuring employee exposure to
determine potential health risks?
A. Hazard communication
B. Exposure assessment
C. Procurement management
D. Accident investigation
Answer: B
Rationale: Exposure assessment determines the magnitude, frequency, and
duration of worker exposures.
9.
A substance capable of causing cancer in humans after repeated exposure is
classified as which type of health hazard?
A. Corrosive
B. Carcinogenic
C. Reactive
D. Flammable
EXAMINATION COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR
JUST RELEASED
1.
Which primary objective of industrial hygiene focuses on identifying workplace
hazards before they cause employee illness or injury?
A. Compensation administration
B. Hazard anticipation and recognition
C. Payroll management
D. Product marketing
Answer: B
Rationale: Industrial hygiene emphasizes anticipating and recognizing hazards
before they negatively affect worker health.
2.
Which route of exposure most commonly allows airborne contaminants to enter a
worker's body during industrial operations?
A. Injection
B. Ingestion
C. Inhalation
D. Absorption through clothing
Answer: C
,Rationale: Inhalation is the most common occupational exposure route for
airborne contaminants such as dusts, vapors, and fumes.
3.
What is the primary purpose of conducting a workplace industrial hygiene survey
before implementing control measures?
A. Increase production quotas
B. Evaluate employee attendance
C. Identify and assess workplace hazards
D. Determine employee salaries
Answer: C
Rationale: Industrial hygiene surveys identify hazards and evaluate exposure
levels before selecting controls.
4.
Which category of hazard includes excessive workplace noise capable of causing
hearing loss over time?
A. Biological hazard
B. Physical hazard
C. Chemical hazard
D. Ergonomic hazard
Answer: B
Rationale: Noise is classified as a physical hazard because it involves energy
affecting workers.
,5.
According to the hierarchy of controls, which method is generally considered
most effective for reducing occupational exposures?
A. Personal protective equipment
B. Administrative controls
C. Engineering controls or elimination
D. Worker training alone
Answer: C
Rationale: Elimination and engineering controls reduce hazards at their source
and are more effective than PPE.
6.
Which occupational exposure limit is published by OSHA and legally enforceable
in workplaces under its jurisdiction?
A. TLV
B. REL
C. PEL
D. BEI
Answer: C
Rationale: OSHA Permissible Exposure Limits (PELs) are regulatory exposure limits
enforceable by law.
7.
What is the primary function of local exhaust ventilation in an industrial hygiene
program?
, A. Increase indoor humidity
B. Capture contaminants near their source
C. Improve workplace aesthetics
D. Reduce employee work hours
Answer: B
Rationale: Local exhaust ventilation removes contaminants before they disperse
into the work environment.
8.
Which industrial hygiene principle involves measuring employee exposure to
determine potential health risks?
A. Hazard communication
B. Exposure assessment
C. Procurement management
D. Accident investigation
Answer: B
Rationale: Exposure assessment determines the magnitude, frequency, and
duration of worker exposures.
9.
A substance capable of causing cancer in humans after repeated exposure is
classified as which type of health hazard?
A. Corrosive
B. Carcinogenic
C. Reactive
D. Flammable
