OSHA 10-Hour Safety Certification Practice Exam | Complete Study Guide with
Verified Questions & Detailed Rationales | Updated 2026 | Workplace Safety
Standards, Hazard Recognition, Personal Protective Equipment (PPE), Fire
Prevention & Emergency Action Plans, Electrical & Fall Hazards, OSHA Regulations
Compliance, Accident Investigation, Reporting & Documentation, Safety Program
Implementation
Question 1: What is the primary purpose of the Occupational Safety and Health
Administration (OSHA)?
A. To provide health insurance for workers
B. To ensure safe and healthful working conditions by setting and enforcing standards
C. To manage employee payroll and benefits
D. To oversee labor union negotiations
CORRECT ANSWER: B. To ensure safe and healthful working conditions by setting
and enforcing standards
RATIONALE: OSHA was created under the Occupational Safety and Health Act of 1970
with the mission to assure safe and healthful working conditions for workers by setting
and enforcing standards and by providing training, outreach, education, and assistance.
Question 2: Which of the following is NOT one of the four "Focus Four" hazards in
construction that cause the majority of serious injuries and fatalities?
A. Falls
B. Electrocution
C. Repetitive motion injuries
D. Struck-by objects
CORRECT ANSWER: C. Repetitive motion injuries
RATIONALE: The Focus Four hazards in construction are falls, electrocution, struck-by
objects, and caught-in/between hazards. These four categories account for the majority
of fatalities in the construction industry. Repetitive motion injuries, while important, are
not part of this specific classification.
Question 3: Under OSHA regulations, within how many hours must an employer
report a work-related fatality?
A. 4 hours
B. 8 hours
C. 24 hours
D. 48 hours
CORRECT ANSWER: B. 8 hours
RATIONALE: OSHA requires employers to report any work-related fatality within 8 hours
of learning about it. In-patient hospitalizations, amputations, or losses of an eye must
be reported within 24 hours.
,Question 4: What does the "General Duty Clause" of the OSH Act require employers
to do?
A. Provide workers with at least 10 hours of safety training annually
B. Furnish a workplace free from recognized hazards that are causing or likely to cause
death or serious physical harm
C. Keep detailed records of all minor workplace injuries
D. Allow workers to stop work at any time without consequence
CORRECT ANSWER: B. Furnish a workplace free from recognized hazards that are
causing or likely to cause death or serious physical harm
RATIONALE: Section 5(a)(1) of the OSH Act, known as the General Duty Clause,
requires employers to provide employment and a place of employment free from
recognized hazards that are causing or are likely to cause death or serious physical
harm to employees.
Question 5: Which of the following worker rights is guaranteed under the OSH Act?
A. The right to refuse any task they find uncomfortable
B. The right to receive information and training about workplace hazards
C. The right to choose their own personal protective equipment without employer input
D. The right to conduct their own OSHA inspections
CORRECT ANSWER: B. The right to receive information and training about
workplace hazards
RATIONALE: Under the OSH Act, workers have the right to receive information and
training about hazards, methods to prevent harm, and OSHA standards that apply to
their workplace. Training must be in a language and vocabulary workers can
understand.
Question 6: What is the maximum penalty OSHA can assess for a willful violation
as of 2024?
A. $1,000
B. $13,653
C. $156,259
D. $500,000
CORRECT ANSWER: C. $156,259
RATIONALE: As adjusted for inflation in 2024, the maximum penalty for a willful or
repeated OSHA violation is $156,259. Penalties are periodically adjusted to maintain
their deterrent effect.
Question 7: Which document provides detailed information about a hazardous
chemical's properties, handling, storage, and emergency measures?
,A. Job Hazard Analysis (JHA)
B. Safety Data Sheet (SDS)
C. Material Delivery Receipt
D. Equipment Maintenance Log
CORRECT ANSWER: B. Safety Data Sheet (SDS)
RATIONALE: Safety Data Sheets (SDS), formerly known as Material Safety Data Sheets
(MSDS), are required under OSHA's Hazard Communication Standard. They provide
comprehensive information about hazardous chemicals, including physical and health
hazards, protective measures, and emergency procedures.
Question 8: Under the Hazard Communication Standard, what shape is used for
hazard pictograms on labels?
A. Circle
B. Triangle
C. Square set on a point (diamond)
D. Rectangle
CORRECT ANSWER: C. Square set on a point (diamond)
RATIONALE: The Globally Harmonized System (GHS), adopted by OSHA's Hazard
Communication Standard, requires hazard pictograms to be displayed in a red diamond
(square set on a point) to quickly communicate chemical hazards.
Question 9: Which of the following is an example of an engineering control for noise
exposure?
A. Providing earplugs to workers
B. Rotating workers to limit exposure time
C. Installing sound-dampening enclosures around noisy equipment
D. Posting warning signs about high noise areas
CORRECT ANSWER: C. Installing sound-dampening enclosures around noisy
equipment
RATIONALE: Engineering controls eliminate or reduce hazards at the source. Installing
sound-dampening enclosures addresses noise at its origin, whereas PPE (earplugs),
administrative controls (rotation), and warnings are less effective in the hierarchy of
controls.
Question 10: What is the OSHA permissible exposure limit (PEL) for noise over an 8-
hour time-weighted average?
A. 85 decibels
B. 90 decibels
C. 100 decibels
D. 115 decibels
, CORRECT ANSWER: B. 90 decibels
RATIONALE: OSHA's noise standard sets the permissible exposure limit at 90 decibels
averaged over an 8-hour workday. However, the action level requiring a hearing
conservation program is 85 decibels.
Question 11: When working near exposed energized electrical parts, what is the
MINIMUM approach distance for an unqualified person for voltages between 50V
and 300V?
A. 3 feet
B. 5 feet
C. 10 feet
D. No minimum distance required
CORRECT ANSWER: A. 3 feet
RATIONALE: OSHA standards require unqualified persons to maintain a minimum
approach distance of 3 feet from exposed energized electrical parts operating at 50 to
300 volts to prevent electrical shock and arc flash hazards.
Question 12: Which type of fire extinguisher is appropriate for electrical fires?
A. Class A
B. Class B
C. Class C
D. Class K
CORRECT ANSWER: C. Class C
RATIONALE: Class C fire extinguishers are designed for energized electrical equipment
fires. They use non-conductive extinguishing agents to prevent electrical shock to the
user.
Question 13: What is the required load capacity for a scaffold platform?
A. Its own weight only
B. At least 2 times the maximum intended load
C. At least 4 times the maximum intended load
D. At least 10 times the maximum intended load
CORRECT ANSWER: C. At least 4 times the maximum intended load
RATIONALE: OSHA requires that scaffold platforms and components be capable of
supporting, without failure, at least four times the maximum intended load to ensure
adequate safety margins.
Question 14: At what height must fall protection be provided for construction
workers on a walking-working surface?
Verified Questions & Detailed Rationales | Updated 2026 | Workplace Safety
Standards, Hazard Recognition, Personal Protective Equipment (PPE), Fire
Prevention & Emergency Action Plans, Electrical & Fall Hazards, OSHA Regulations
Compliance, Accident Investigation, Reporting & Documentation, Safety Program
Implementation
Question 1: What is the primary purpose of the Occupational Safety and Health
Administration (OSHA)?
A. To provide health insurance for workers
B. To ensure safe and healthful working conditions by setting and enforcing standards
C. To manage employee payroll and benefits
D. To oversee labor union negotiations
CORRECT ANSWER: B. To ensure safe and healthful working conditions by setting
and enforcing standards
RATIONALE: OSHA was created under the Occupational Safety and Health Act of 1970
with the mission to assure safe and healthful working conditions for workers by setting
and enforcing standards and by providing training, outreach, education, and assistance.
Question 2: Which of the following is NOT one of the four "Focus Four" hazards in
construction that cause the majority of serious injuries and fatalities?
A. Falls
B. Electrocution
C. Repetitive motion injuries
D. Struck-by objects
CORRECT ANSWER: C. Repetitive motion injuries
RATIONALE: The Focus Four hazards in construction are falls, electrocution, struck-by
objects, and caught-in/between hazards. These four categories account for the majority
of fatalities in the construction industry. Repetitive motion injuries, while important, are
not part of this specific classification.
Question 3: Under OSHA regulations, within how many hours must an employer
report a work-related fatality?
A. 4 hours
B. 8 hours
C. 24 hours
D. 48 hours
CORRECT ANSWER: B. 8 hours
RATIONALE: OSHA requires employers to report any work-related fatality within 8 hours
of learning about it. In-patient hospitalizations, amputations, or losses of an eye must
be reported within 24 hours.
,Question 4: What does the "General Duty Clause" of the OSH Act require employers
to do?
A. Provide workers with at least 10 hours of safety training annually
B. Furnish a workplace free from recognized hazards that are causing or likely to cause
death or serious physical harm
C. Keep detailed records of all minor workplace injuries
D. Allow workers to stop work at any time without consequence
CORRECT ANSWER: B. Furnish a workplace free from recognized hazards that are
causing or likely to cause death or serious physical harm
RATIONALE: Section 5(a)(1) of the OSH Act, known as the General Duty Clause,
requires employers to provide employment and a place of employment free from
recognized hazards that are causing or are likely to cause death or serious physical
harm to employees.
Question 5: Which of the following worker rights is guaranteed under the OSH Act?
A. The right to refuse any task they find uncomfortable
B. The right to receive information and training about workplace hazards
C. The right to choose their own personal protective equipment without employer input
D. The right to conduct their own OSHA inspections
CORRECT ANSWER: B. The right to receive information and training about
workplace hazards
RATIONALE: Under the OSH Act, workers have the right to receive information and
training about hazards, methods to prevent harm, and OSHA standards that apply to
their workplace. Training must be in a language and vocabulary workers can
understand.
Question 6: What is the maximum penalty OSHA can assess for a willful violation
as of 2024?
A. $1,000
B. $13,653
C. $156,259
D. $500,000
CORRECT ANSWER: C. $156,259
RATIONALE: As adjusted for inflation in 2024, the maximum penalty for a willful or
repeated OSHA violation is $156,259. Penalties are periodically adjusted to maintain
their deterrent effect.
Question 7: Which document provides detailed information about a hazardous
chemical's properties, handling, storage, and emergency measures?
,A. Job Hazard Analysis (JHA)
B. Safety Data Sheet (SDS)
C. Material Delivery Receipt
D. Equipment Maintenance Log
CORRECT ANSWER: B. Safety Data Sheet (SDS)
RATIONALE: Safety Data Sheets (SDS), formerly known as Material Safety Data Sheets
(MSDS), are required under OSHA's Hazard Communication Standard. They provide
comprehensive information about hazardous chemicals, including physical and health
hazards, protective measures, and emergency procedures.
Question 8: Under the Hazard Communication Standard, what shape is used for
hazard pictograms on labels?
A. Circle
B. Triangle
C. Square set on a point (diamond)
D. Rectangle
CORRECT ANSWER: C. Square set on a point (diamond)
RATIONALE: The Globally Harmonized System (GHS), adopted by OSHA's Hazard
Communication Standard, requires hazard pictograms to be displayed in a red diamond
(square set on a point) to quickly communicate chemical hazards.
Question 9: Which of the following is an example of an engineering control for noise
exposure?
A. Providing earplugs to workers
B. Rotating workers to limit exposure time
C. Installing sound-dampening enclosures around noisy equipment
D. Posting warning signs about high noise areas
CORRECT ANSWER: C. Installing sound-dampening enclosures around noisy
equipment
RATIONALE: Engineering controls eliminate or reduce hazards at the source. Installing
sound-dampening enclosures addresses noise at its origin, whereas PPE (earplugs),
administrative controls (rotation), and warnings are less effective in the hierarchy of
controls.
Question 10: What is the OSHA permissible exposure limit (PEL) for noise over an 8-
hour time-weighted average?
A. 85 decibels
B. 90 decibels
C. 100 decibels
D. 115 decibels
, CORRECT ANSWER: B. 90 decibels
RATIONALE: OSHA's noise standard sets the permissible exposure limit at 90 decibels
averaged over an 8-hour workday. However, the action level requiring a hearing
conservation program is 85 decibels.
Question 11: When working near exposed energized electrical parts, what is the
MINIMUM approach distance for an unqualified person for voltages between 50V
and 300V?
A. 3 feet
B. 5 feet
C. 10 feet
D. No minimum distance required
CORRECT ANSWER: A. 3 feet
RATIONALE: OSHA standards require unqualified persons to maintain a minimum
approach distance of 3 feet from exposed energized electrical parts operating at 50 to
300 volts to prevent electrical shock and arc flash hazards.
Question 12: Which type of fire extinguisher is appropriate for electrical fires?
A. Class A
B. Class B
C. Class C
D. Class K
CORRECT ANSWER: C. Class C
RATIONALE: Class C fire extinguishers are designed for energized electrical equipment
fires. They use non-conductive extinguishing agents to prevent electrical shock to the
user.
Question 13: What is the required load capacity for a scaffold platform?
A. Its own weight only
B. At least 2 times the maximum intended load
C. At least 4 times the maximum intended load
D. At least 10 times the maximum intended load
CORRECT ANSWER: C. At least 4 times the maximum intended load
RATIONALE: OSHA requires that scaffold platforms and components be capable of
supporting, without failure, at least four times the maximum intended load to ensure
adequate safety margins.
Question 14: At what height must fall protection be provided for construction
workers on a walking-working surface?
