OSHA 30-Hour Certification Practice Exam
Question And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A Instant
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1. What is the primary purpose of OSHA?
A. Increase company profits
B. Ensure safe and healthful working conditions
C. Train company managers only
D. Provide health insurance
Rationale: OSHA was created to protect workers by setting and
enforcing safety and health standards.
2. Who does OSHA cover?
A. Only government workers
B. Only private companies
C. Only union workers
D. Most private sector and some public sector workers
Rationale: OSHA covers most private sector employees and some
public employees under state plans.
3. How long must employers keep OSHA injury and illness records?
A. 1 year
B. 3 years
C. 5 years
D. 10 years
, Rationale: OSHA requires records to be maintained for a
minimum of five years.
4. Which OSHA form is used to log work-related injuries and
illnesses?
A. OSHA 300A
B. OSHA 300
C. OSHA 301
D. OSHA 200
Rationale: The OSHA 300 Log records all recordable injuries and
illnesses.
5. What does PPE stand for?
A. Personal Prevention Equipment
B. Personal Protective Equipment
C. Public Protective Equipment
D. Protection Program Equipment
Rationale: PPE means Personal Protective Equipment, used to
reduce exposure to hazards.
6. A hazard that can cause immediate injury is known as:
A. Biological hazard
B. Safety hazard
C. Ergonomic hazard
D. Chemical hazard
Rationale: Safety hazards cause immediate injuries such as cuts,
falls, or impacts.
7. What is the minimum width of a standard guardrail system top
rail?
A. 24 inches
, B. 42 inches
C. 30 inches
D. 48 inches
Rationale: OSHA requires the top rail to be 42 inches above the
walking/working surface.
8. Which type of fire involves electrical equipment?
A. Class A
B. Class B
C. Class C
D. Class D
Rationale: Class C fires involve energized electrical equipment.
9. What color is used for hydrogen gas cylinders?
A. Blue
B. Red
C. Green
D. Black
Rationale: Red is commonly used to mark flammable gas
cylinders such as hydrogen.
10. The first step in hazard communication is:
A. Wearing PPE
B. Identifying hazardous chemicals
C. Cleaning spills
D. Calling OSHA
Rationale: Employers must first identify hazardous chemicals in
the workplace.
11. A ladder placed at the wrong angle is a:
A. Chemical hazard
Question And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A Instant
Download Pdf
1. What is the primary purpose of OSHA?
A. Increase company profits
B. Ensure safe and healthful working conditions
C. Train company managers only
D. Provide health insurance
Rationale: OSHA was created to protect workers by setting and
enforcing safety and health standards.
2. Who does OSHA cover?
A. Only government workers
B. Only private companies
C. Only union workers
D. Most private sector and some public sector workers
Rationale: OSHA covers most private sector employees and some
public employees under state plans.
3. How long must employers keep OSHA injury and illness records?
A. 1 year
B. 3 years
C. 5 years
D. 10 years
, Rationale: OSHA requires records to be maintained for a
minimum of five years.
4. Which OSHA form is used to log work-related injuries and
illnesses?
A. OSHA 300A
B. OSHA 300
C. OSHA 301
D. OSHA 200
Rationale: The OSHA 300 Log records all recordable injuries and
illnesses.
5. What does PPE stand for?
A. Personal Prevention Equipment
B. Personal Protective Equipment
C. Public Protective Equipment
D. Protection Program Equipment
Rationale: PPE means Personal Protective Equipment, used to
reduce exposure to hazards.
6. A hazard that can cause immediate injury is known as:
A. Biological hazard
B. Safety hazard
C. Ergonomic hazard
D. Chemical hazard
Rationale: Safety hazards cause immediate injuries such as cuts,
falls, or impacts.
7. What is the minimum width of a standard guardrail system top
rail?
A. 24 inches
, B. 42 inches
C. 30 inches
D. 48 inches
Rationale: OSHA requires the top rail to be 42 inches above the
walking/working surface.
8. Which type of fire involves electrical equipment?
A. Class A
B. Class B
C. Class C
D. Class D
Rationale: Class C fires involve energized electrical equipment.
9. What color is used for hydrogen gas cylinders?
A. Blue
B. Red
C. Green
D. Black
Rationale: Red is commonly used to mark flammable gas
cylinders such as hydrogen.
10. The first step in hazard communication is:
A. Wearing PPE
B. Identifying hazardous chemicals
C. Cleaning spills
D. Calling OSHA
Rationale: Employers must first identify hazardous chemicals in
the workplace.
11. A ladder placed at the wrong angle is a:
A. Chemical hazard
