OSHA 510 EXAM NEWEST EXAM 2025 | COMPLETE
QUESTIONS AND CORRECT ANSWERS | GRADED A+ |
LATEST EXAM | VERIFIED ANSWERS
Occupational Safety & Health Standards for the Construction Industry | Key Domains: OSH Act,
General Duty Clause, and OSHA Inspections; Hazard Communication (GHS); Fall Protection
(1926.501); Electrical Safety (Subpart K); Personal Protective Equipment (PPE); Scaffolding
(1926.451); Excavation & Trenching (Subpart P); Stairways & Ladders (Subpart X); Health Hazards
in Construction (Silica, Lead, Noise); and Recordkeeping (1904) | Expert-Aligned Structure |
Exam-Ready Format
Introduction
This structured OSHA 510 Exam for 2025 provides 100 high-quality exam-style questions with
correct answers and rationales. It emphasizes the application of OSHA 29 CFR 1926 (Construction)
standards, hazard recognition, abatement methods, employer and worker rights/responsibilities,
and inspection procedures to ensure competency in construction industry safety compliance.
Answer Format
All correct answers must appear in bold and cyan blue, accompanied by concise rationales
explaining the specific OSHA standard reference (e.g., 1926.501(b)(1)), the correct regulatory
requirement, the principle of hazard control, and why alternative options are non-compliant or
represent common safety violations.
OSH Act & General Duty Clause
1.
Under the OSH Act, which of the following is NOT an employer responsibility?
,A. Provide a workplace free from recognized hazards
B. Comply with OSHA standards
C. Guarantee workers will never be injured
D. Provide required training
C. Guarantee workers will never be injured
OSHA requires employers to provide a workplace “free from recognized hazards” (General Duty
Clause, Section 5(a)(1)) and comply with standards, but it does not guarantee zero injuries.
Employers must mitigate hazards, not eliminate all risk absolutely.
Fall Protection
2.
At what height must fall protection be provided for construction workers engaged in leading edge
work?
A. 4 feet
B. 6 feet
C. 10 feet
D. 15 feet
B. 6 feet
Per 29 CFR 1926.501(b)(2), fall protection is required when working 6 feet or more above a lower
level for leading edge work. General industry (1910) uses 4 feet, but construction uses 6 feet.
Hazard Communication
3.
Under the GHS-aligned Hazard Communication Standard, which of the following must be on every
chemical label?
,A. Manufacturer’s logo
B. Product identifier, signal word, hazard statement, pictogram, precautionary statement, and
supplier info
C. Price per unit
D. Expiration date only
B. Product identifier, signal word, hazard statement, pictogram, precautionary statement,
and supplier info
OSHA 1910.1200(f)(1) mandates these six elements on all GHS labels. Omitting any (e.g.,
pictogram or precautionary statement) is non-compliant.
Electrical Safety
4.
What is the minimum clearance distance for unqualified workers near overhead power lines
carrying 50 kV?
A. 3 feet
B. 6 feet
C. 10 feet
D. 20 feet
C. 10 feet
OSHA 1926.1408 requires a minimum 10-foot clearance for lines up to 50 kV. For higher voltages,
greater distances are required.
PPE
5.
Who is responsible for providing and paying for required PPE in the construction industry?
, A. The employee
B. The union
C. The employer
D. OSHA
C. The employer
OSHA 1926.95(a) states the employer must provide and pay for PPE required by OSHA standards
(e.g., hard hats, fall arrest systems, respirators). Exceptions are non-specialty safety-toe footwear
and everyday clothing.
Scaffolding
6.
What is the maximum height a supported scaffold can be without being secured to prevent swaying?
A. 2 times the base width
B. 3 times the base width
C. 4 times the base width
D. 5 times the base width
C. 4 times the base width
OSHA 1926.451(c)(1) states scaffolds over 4 times their base width must be restrained from
tipping (e.g., by guying, tying, or bracing).
Excavation & Trenching
7.
At what depth must a protective system (e.g., shoring, sloping, or shielding) be used in a trench?
QUESTIONS AND CORRECT ANSWERS | GRADED A+ |
LATEST EXAM | VERIFIED ANSWERS
Occupational Safety & Health Standards for the Construction Industry | Key Domains: OSH Act,
General Duty Clause, and OSHA Inspections; Hazard Communication (GHS); Fall Protection
(1926.501); Electrical Safety (Subpart K); Personal Protective Equipment (PPE); Scaffolding
(1926.451); Excavation & Trenching (Subpart P); Stairways & Ladders (Subpart X); Health Hazards
in Construction (Silica, Lead, Noise); and Recordkeeping (1904) | Expert-Aligned Structure |
Exam-Ready Format
Introduction
This structured OSHA 510 Exam for 2025 provides 100 high-quality exam-style questions with
correct answers and rationales. It emphasizes the application of OSHA 29 CFR 1926 (Construction)
standards, hazard recognition, abatement methods, employer and worker rights/responsibilities,
and inspection procedures to ensure competency in construction industry safety compliance.
Answer Format
All correct answers must appear in bold and cyan blue, accompanied by concise rationales
explaining the specific OSHA standard reference (e.g., 1926.501(b)(1)), the correct regulatory
requirement, the principle of hazard control, and why alternative options are non-compliant or
represent common safety violations.
OSH Act & General Duty Clause
1.
Under the OSH Act, which of the following is NOT an employer responsibility?
,A. Provide a workplace free from recognized hazards
B. Comply with OSHA standards
C. Guarantee workers will never be injured
D. Provide required training
C. Guarantee workers will never be injured
OSHA requires employers to provide a workplace “free from recognized hazards” (General Duty
Clause, Section 5(a)(1)) and comply with standards, but it does not guarantee zero injuries.
Employers must mitigate hazards, not eliminate all risk absolutely.
Fall Protection
2.
At what height must fall protection be provided for construction workers engaged in leading edge
work?
A. 4 feet
B. 6 feet
C. 10 feet
D. 15 feet
B. 6 feet
Per 29 CFR 1926.501(b)(2), fall protection is required when working 6 feet or more above a lower
level for leading edge work. General industry (1910) uses 4 feet, but construction uses 6 feet.
Hazard Communication
3.
Under the GHS-aligned Hazard Communication Standard, which of the following must be on every
chemical label?
,A. Manufacturer’s logo
B. Product identifier, signal word, hazard statement, pictogram, precautionary statement, and
supplier info
C. Price per unit
D. Expiration date only
B. Product identifier, signal word, hazard statement, pictogram, precautionary statement,
and supplier info
OSHA 1910.1200(f)(1) mandates these six elements on all GHS labels. Omitting any (e.g.,
pictogram or precautionary statement) is non-compliant.
Electrical Safety
4.
What is the minimum clearance distance for unqualified workers near overhead power lines
carrying 50 kV?
A. 3 feet
B. 6 feet
C. 10 feet
D. 20 feet
C. 10 feet
OSHA 1926.1408 requires a minimum 10-foot clearance for lines up to 50 kV. For higher voltages,
greater distances are required.
PPE
5.
Who is responsible for providing and paying for required PPE in the construction industry?
, A. The employee
B. The union
C. The employer
D. OSHA
C. The employer
OSHA 1926.95(a) states the employer must provide and pay for PPE required by OSHA standards
(e.g., hard hats, fall arrest systems, respirators). Exceptions are non-specialty safety-toe footwear
and everyday clothing.
Scaffolding
6.
What is the maximum height a supported scaffold can be without being secured to prevent swaying?
A. 2 times the base width
B. 3 times the base width
C. 4 times the base width
D. 5 times the base width
C. 4 times the base width
OSHA 1926.451(c)(1) states scaffolds over 4 times their base width must be restrained from
tipping (e.g., by guying, tying, or bracing).
Excavation & Trenching
7.
At what depth must a protective system (e.g., shoring, sloping, or shielding) be used in a trench?
