Nevada Occupational Safety Specialist
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. Which agency primarily enforces workplace safety regulations in the
United States?
A. EPA
B. CDC
C. OSHA
D. FEMA
The Occupational Safety and Health Administration (OSHA) is
responsible for developing and enforcing workplace safety and
health standards.
2. What is the first step in a hazard control hierarchy?
A. PPE
B. Engineering controls
C. Administrative controls
D. Elimination
Elimination removes the hazard entirely, making it the most effective
control measure.
3. Which document outlines workplace hazards and safety procedures
for chemicals?
A. OSHA 300 Log
B. Safety Data Sheet (SDS)
C. Incident Report
D. Job Hazard Analysis
, An SDS provides detailed information about chemical hazards,
handling, storage, and emergency measures.
4. What type of hazard is excessive noise?
A. Chemical
B. Biological
C. Physical
D. Ergonomic
Noise is classified as a physical hazard because it can cause hearing
damage.
5. Which PPE protects against respiratory hazards?
A. Gloves
B. Face shield
C. Respirator
D. Hard hat
Respirators protect workers from inhaling harmful airborne
contaminants.
6. What is the purpose of lockout/tagout procedures?
A. Improve productivity
B. Reduce paperwork
C. Prevent unexpected equipment startup
D. Increase inspection speed
Lockout/tagout ensures machinery is de-energized during
maintenance to prevent injury.
7. Which color is typically associated with safety warnings?
A. Blue
B. Green
C. Yellow
D. White
Yellow is commonly used to indicate caution and potential hazards.
8. What does a confined space require before entry?
A. PPE only
B. Permit and atmospheric testing
C. Supervisor approval only
D. No preparation
Confined spaces require permits and hazard evaluation before entry.
, 9. Which gas is a common asphyxiant in confined spaces?
A. Oxygen
B. Nitrogen
C. Carbon monoxide
D. Hydrogen
Carbon monoxide displaces oxygen and can cause suffocation.
10. What is the primary purpose of incident investigation?
A. Assign blame
B. Reduce insurance
C. Identify root causes and prevent recurrence
D. Punish employees
Investigations aim to determine causes and prevent future incidents.
11. Which regulation addresses hazardous chemicals
communication?
A. PPE Standard
B. Hazard Communication Standard
C. Noise Standard
D. Fall Protection Standard
The Hazard Communication Standard ensures workers are informed
about chemical hazards.
12. What is the minimum fall protection height in general industry?
A. 3 feet
B. 4 feet
C. 6 feet
D. 10 feet
Fall protection is generally required at six feet in construction
settings.
13. Which hazard is associated with repetitive motion?
A. Chemical
B. Ergonomic
C. Biological
D. Electrical
Repetitive motion injuries are ergonomic hazards.
14. What should be done first in an emergency?
A. Document incident
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which agency primarily enforces workplace safety regulations in the
United States?
A. EPA
B. CDC
C. OSHA
D. FEMA
The Occupational Safety and Health Administration (OSHA) is
responsible for developing and enforcing workplace safety and
health standards.
2. What is the first step in a hazard control hierarchy?
A. PPE
B. Engineering controls
C. Administrative controls
D. Elimination
Elimination removes the hazard entirely, making it the most effective
control measure.
3. Which document outlines workplace hazards and safety procedures
for chemicals?
A. OSHA 300 Log
B. Safety Data Sheet (SDS)
C. Incident Report
D. Job Hazard Analysis
, An SDS provides detailed information about chemical hazards,
handling, storage, and emergency measures.
4. What type of hazard is excessive noise?
A. Chemical
B. Biological
C. Physical
D. Ergonomic
Noise is classified as a physical hazard because it can cause hearing
damage.
5. Which PPE protects against respiratory hazards?
A. Gloves
B. Face shield
C. Respirator
D. Hard hat
Respirators protect workers from inhaling harmful airborne
contaminants.
6. What is the purpose of lockout/tagout procedures?
A. Improve productivity
B. Reduce paperwork
C. Prevent unexpected equipment startup
D. Increase inspection speed
Lockout/tagout ensures machinery is de-energized during
maintenance to prevent injury.
7. Which color is typically associated with safety warnings?
A. Blue
B. Green
C. Yellow
D. White
Yellow is commonly used to indicate caution and potential hazards.
8. What does a confined space require before entry?
A. PPE only
B. Permit and atmospheric testing
C. Supervisor approval only
D. No preparation
Confined spaces require permits and hazard evaluation before entry.
, 9. Which gas is a common asphyxiant in confined spaces?
A. Oxygen
B. Nitrogen
C. Carbon monoxide
D. Hydrogen
Carbon monoxide displaces oxygen and can cause suffocation.
10. What is the primary purpose of incident investigation?
A. Assign blame
B. Reduce insurance
C. Identify root causes and prevent recurrence
D. Punish employees
Investigations aim to determine causes and prevent future incidents.
11. Which regulation addresses hazardous chemicals
communication?
A. PPE Standard
B. Hazard Communication Standard
C. Noise Standard
D. Fall Protection Standard
The Hazard Communication Standard ensures workers are informed
about chemical hazards.
12. What is the minimum fall protection height in general industry?
A. 3 feet
B. 4 feet
C. 6 feet
D. 10 feet
Fall protection is generally required at six feet in construction
settings.
13. Which hazard is associated with repetitive motion?
A. Chemical
B. Ergonomic
C. Biological
D. Electrical
Repetitive motion injuries are ergonomic hazards.
14. What should be done first in an emergency?
A. Document incident
