Occupational Health and Safety Certification
Exam Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a Job Safety Analysis (JSA)?
A. To reduce costs
B. To improve productivity
C. To identify hazards and control measures
D. To assign job roles
It helps in recognizing potential hazards in a task and determining
how to control them to prevent accidents.
2. Which OSHA standard covers respiratory protection?
A. Electrical Safety Standard
B. Hazard Communication Standard
C. 29 CFR 1910.134
D. Lockout/Tagout Standard
This standard specifies requirements for respirators to protect
workers from airborne contaminants.
3. What is the most effective way to prevent slips, trips, and falls in
the workplace?
A. Wearing safety glasses
B. Maintaining clean and dry floors
C. Using gloves
D. Conducting fire drills
Proper housekeeping, including cleaning spills and keeping
walkways clear, prevents most slip, trip, and fall accidents.
,4. The Hierarchy of Controls places which method as the most
effective?
A. Personal Protective Equipment (PPE)
B. Administrative controls
C. Elimination of the hazard
D. Engineering controls
Eliminating the hazard completely removes the risk, which is more
effective than controlling it.
5. What type of fire extinguisher should be used on an electrical
fire?
A. Water
B. Foam
C. CO2 or Dry Chemical
D. Wet Chemical
CO2 and dry chemical extinguishers do not conduct electricity,
making them safe for electrical fires.
6. Which of the following is an example of an engineering control?
A. Safety training
B. Guarding a machine
C. Job rotation
D. PPE
Engineering controls physically isolate workers from hazards, like
machine guards or ventilation systems.
7. Noise levels above what decibel require hearing protection in
most workplaces?
A. 70 dB
B. 80 dB
C. 85 dB
D. 90 dB
, OSHA mandates hearing protection when average noise exposure
exceeds 85 decibels over an 8-hour shift.
8. What does a Material Safety Data Sheet (MSDS) provide?
A. Salary information
B. Information on chemical hazards and handling
C. Job descriptions
D. Emergency contact numbers
MSDS, now called SDS, details chemical properties, hazards, and
safe handling procedures.
9. Lockout/Tagout procedures are primarily designed to prevent:
A. Chemical spills
B. Fires
C. Unexpected energization of machines
D. Noise hazards
These procedures ensure machines cannot start unexpectedly
during maintenance, protecting workers from injuries.
10. What is the main purpose of personal protective equipment
(PPE)?
A. To replace engineering controls
B. To improve productivity
C. To protect workers from hazards
D. To reduce training needs
PPE provides a last line of defense when hazards cannot be
eliminated or controlled by other means.
11. Which type of hazard is most likely to cause skin burns?
A. Noise
B. Chemical
C. Biological
D. Ergonomic
Exam Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a Job Safety Analysis (JSA)?
A. To reduce costs
B. To improve productivity
C. To identify hazards and control measures
D. To assign job roles
It helps in recognizing potential hazards in a task and determining
how to control them to prevent accidents.
2. Which OSHA standard covers respiratory protection?
A. Electrical Safety Standard
B. Hazard Communication Standard
C. 29 CFR 1910.134
D. Lockout/Tagout Standard
This standard specifies requirements for respirators to protect
workers from airborne contaminants.
3. What is the most effective way to prevent slips, trips, and falls in
the workplace?
A. Wearing safety glasses
B. Maintaining clean and dry floors
C. Using gloves
D. Conducting fire drills
Proper housekeeping, including cleaning spills and keeping
walkways clear, prevents most slip, trip, and fall accidents.
,4. The Hierarchy of Controls places which method as the most
effective?
A. Personal Protective Equipment (PPE)
B. Administrative controls
C. Elimination of the hazard
D. Engineering controls
Eliminating the hazard completely removes the risk, which is more
effective than controlling it.
5. What type of fire extinguisher should be used on an electrical
fire?
A. Water
B. Foam
C. CO2 or Dry Chemical
D. Wet Chemical
CO2 and dry chemical extinguishers do not conduct electricity,
making them safe for electrical fires.
6. Which of the following is an example of an engineering control?
A. Safety training
B. Guarding a machine
C. Job rotation
D. PPE
Engineering controls physically isolate workers from hazards, like
machine guards or ventilation systems.
7. Noise levels above what decibel require hearing protection in
most workplaces?
A. 70 dB
B. 80 dB
C. 85 dB
D. 90 dB
, OSHA mandates hearing protection when average noise exposure
exceeds 85 decibels over an 8-hour shift.
8. What does a Material Safety Data Sheet (MSDS) provide?
A. Salary information
B. Information on chemical hazards and handling
C. Job descriptions
D. Emergency contact numbers
MSDS, now called SDS, details chemical properties, hazards, and
safe handling procedures.
9. Lockout/Tagout procedures are primarily designed to prevent:
A. Chemical spills
B. Fires
C. Unexpected energization of machines
D. Noise hazards
These procedures ensure machines cannot start unexpectedly
during maintenance, protecting workers from injuries.
10. What is the main purpose of personal protective equipment
(PPE)?
A. To replace engineering controls
B. To improve productivity
C. To protect workers from hazards
D. To reduce training needs
PPE provides a last line of defense when hazards cannot be
eliminated or controlled by other means.
11. Which type of hazard is most likely to cause skin burns?
A. Noise
B. Chemical
C. Biological
D. Ergonomic
