Ohio Safety Professional Certification
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales
2026|2027 Q&A | Instant Download Pdf
1. Which OSHA regulation covers hazard communication standards?
A. 29 CFR 1910.147
B. 29 CFR 1910.1200
C. 29 CFR 1926.501
D. 29 CFR 1910.134
B. 29 CFR 1910.1200
This section establishes requirements for chemical hazard
communication and Safety Data Sheets.
2. What is the primary purpose of a Job Hazard Analysis (JHA)?
A. To replace PPE use
, B. To eliminate the need for training
C. To identify and control hazards in specific tasks
D. To reduce insurance premiums
C. To identify and control hazards in specific tasks
JHA systematically breaks down a job into steps to identify hazards
and establish controls.
3. Which fire extinguisher is suitable for an electrical fire?
A. Class A
B. Class B
C. Class C
D. Class D
C. Class C
Class C extinguishers are designed for energized electrical equipment
fires.
4. What is the maximum allowable concentration of oxygen in a confined
space under OSHA standards?
A. 16%
B. 19.5%
C. 23.5%
D. 25%
C. 23.5%
Atmospheres above 23.5% oxygen are considered oxygen-enriched
and present fire hazards.
,5. Which of the following best defines "incident rate"?
A. Number of hazards identified per audit
B. Measure of injuries/illnesses per 100 full-time workers
C. Insurance cost per year
D. Percentage of PPE compliance
B. Measure of injuries/illnesses per 100 full-time workers
Incident rate standardizes injury data for comparison across
industries.
6. What is the color of OSHA’s accident prevention signs for danger?
A. Blue
B. Yellow
C. Red
D. Green
C. Red
Danger signs use red, black, and white to indicate immediate
hazards.
7. Which type of ventilation is most effective at removing contaminants
at the source?
A. Dilution ventilation
B. General exhaust
C. Local exhaust ventilation
D. Natural ventilation
, C. Local exhaust ventilation
This system captures contaminants at the point of generation.
8. The leading cause of workplace fatalities in construction is:
A. Struck-by incidents
B. Electrocution
C. Falls
D. Caught-in/between
C. Falls
Falls consistently account for the largest portion of construction
fatalities.
9. What is the minimum freeboard for storing flammable liquids in safety
cans?
A. 2%
B. 5%
C. 10%
D. 15%
B. 5%
Safety cans require 5% headspace to allow for liquid expansion.
10. Which type of control is considered the most effective in the
hierarchy of controls?
A. PPE
B. Elimination
C. Administrative controls
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales
2026|2027 Q&A | Instant Download Pdf
1. Which OSHA regulation covers hazard communication standards?
A. 29 CFR 1910.147
B. 29 CFR 1910.1200
C. 29 CFR 1926.501
D. 29 CFR 1910.134
B. 29 CFR 1910.1200
This section establishes requirements for chemical hazard
communication and Safety Data Sheets.
2. What is the primary purpose of a Job Hazard Analysis (JHA)?
A. To replace PPE use
, B. To eliminate the need for training
C. To identify and control hazards in specific tasks
D. To reduce insurance premiums
C. To identify and control hazards in specific tasks
JHA systematically breaks down a job into steps to identify hazards
and establish controls.
3. Which fire extinguisher is suitable for an electrical fire?
A. Class A
B. Class B
C. Class C
D. Class D
C. Class C
Class C extinguishers are designed for energized electrical equipment
fires.
4. What is the maximum allowable concentration of oxygen in a confined
space under OSHA standards?
A. 16%
B. 19.5%
C. 23.5%
D. 25%
C. 23.5%
Atmospheres above 23.5% oxygen are considered oxygen-enriched
and present fire hazards.
,5. Which of the following best defines "incident rate"?
A. Number of hazards identified per audit
B. Measure of injuries/illnesses per 100 full-time workers
C. Insurance cost per year
D. Percentage of PPE compliance
B. Measure of injuries/illnesses per 100 full-time workers
Incident rate standardizes injury data for comparison across
industries.
6. What is the color of OSHA’s accident prevention signs for danger?
A. Blue
B. Yellow
C. Red
D. Green
C. Red
Danger signs use red, black, and white to indicate immediate
hazards.
7. Which type of ventilation is most effective at removing contaminants
at the source?
A. Dilution ventilation
B. General exhaust
C. Local exhaust ventilation
D. Natural ventilation
, C. Local exhaust ventilation
This system captures contaminants at the point of generation.
8. The leading cause of workplace fatalities in construction is:
A. Struck-by incidents
B. Electrocution
C. Falls
D. Caught-in/between
C. Falls
Falls consistently account for the largest portion of construction
fatalities.
9. What is the minimum freeboard for storing flammable liquids in safety
cans?
A. 2%
B. 5%
C. 10%
D. 15%
B. 5%
Safety cans require 5% headspace to allow for liquid expansion.
10. Which type of control is considered the most effective in the
hierarchy of controls?
A. PPE
B. Elimination
C. Administrative controls
