Free OSHA 10 Practice Test Online

Official exam: OSHA 10-Hour Construction

Take a free OSHA 10 practice test online: a full 80-question paper with every answer explained, no sign-up, scored by topic. The full 400-question bank and the timed simulator are $14.99 for 30 days.

First published: September 2, 2026Bank updated: September 2, 2026Published by CertQuestUSA · review process

TL;DR

OSHA 10-Hour Construction: a 400-question practice bank for the real OSHA Safety & Health standard, 5 full papers of 80 questions each with no repeats, every question written to the regulation it comes from.

Where these questions come from

Every question in this bank cites a source -- primarily 29 CFR (84%) and OSH Act (4%) of this exam's citations.

Take a full practice test free. 80 real questions built to the exam's domain weights, every answer explained, no sign-up required, with a domain-by-domain score at the end.

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See all plans and bundles

5

full papers, no repeats

80

questions per paper

400

questions in the bank

What this exam covers

Focus Four: Caught-In or Between10%
Elective: Concrete and Masonry5%
Elective: Cranes5%
Elective: Fire Protection5%
Elective: Ladders5%
Elective: Scaffolds5%
Focus Four: Electrocution10%
Focus Four: Falls19%
Health Hazards in Construction6%
Introduction to OSHA13%
PPE and Lifesaving Equipment6%
Focus Four: Struck-By10%

5 real sample questions

Where must a midrail be installed when there is no wall or parapet at least 21 inches high?

A. Midway between the top rail and the walking surface

B. Directly beneath the top rail

C. 6 inches above the walking surface

D. Midrails are optional in all cases

Show answer and reasoning

Correct answer: A. Midway between the top rail and the walking surface

B: That leaves the lower gap open, which is what a midrail exists to close.
C: Too low to prevent a person passing through the gap.
D: They are required unless an equivalent barrier exists.

Source: 29 CFR 1926.502(b)(2)

When does a wall opening require fall protection?

A. When the outside bottom edge is 6 feet or more above a lower level and the inside bottom edge is less than 39 inches above the walking surface

B. Only when the opening is wider than a doorway

C. Only on the ground floor

D. Wall openings never require fall protection

Show answer and reasoning

Correct answer: A. When the outside bottom edge is 6 feet or more above a lower level and the inside bottom edge is less than 39 inches above the walking surface

B: Width is not the criterion; height above the lower level is.
C: Ground floor openings rarely present a 6-foot drop; upper floors do.
D: They do, under this paragraph.

Source: 29 CFR 1926.501(b)(14)

What protection is required when working above vertically protruding reinforcing steel?

A. Guarding the rebar to eliminate the impalement hazard, and fall protection where the fall distance triggers it

B. A warning sign at the perimeter

C. Steel-toed boots

D. No protection is required below 10 feet

Show answer and reasoning

Correct answer: A. Guarding the rebar to eliminate the impalement hazard, and fall protection where the fall distance triggers it

B: A sign does not remove an impalement hazard.
C: Footwear does not address a fall onto protruding steel.
D: Impalement can be fatal from well under 10 feet.

Source: 29 CFR 1926.501(b)(5)

When must employees be protected from falling into an excavation?

A. When the excavation is 6 feet or more deep and not readily seen because of plant growth or other visual barrier, or where there are wells, pits or shafts

B. Only when the excavation is more than 20 feet deep

C. Only when water is present

D. Excavations are exempt from fall protection

Show answer and reasoning

Correct answer: A. When the excavation is 6 feet or more deep and not readily seen because of plant growth or other visual barrier, or where there are wells, pits or shafts

B: The trigger is 6 feet, not 20.
C: Water is not the criterion.
D: They are covered by 1926.501(b)(7).

Source: 29 CFR 1926.501(b)(7)

Which law created OSHA?

A. The Occupational Safety and Health Act of 1970

B. The Fair Labor Standards Act

C. The National Labor Relations Act

D. The Clean Air Act

Show answer and reasoning

Correct answer: A. The Occupational Safety and Health Act of 1970

B: Sets minimum wage and overtime, not workplace safety.
C: Governs union organising and collective bargaining.
D: Environmental air quality, administered by the EPA.

Source: OSH Act of 1970

Frequently asked questions

Where can I take a free OSHA 10 practice test online?

Right here. CertQuestUSA's free OSHA 10 practice test online is a full 80-question practice paper built to the real exam's domain weights, with every answer explained, with no sign-up and no credit card, and shows your score by topic at the end. The full 400-question bank, with every answer explained and cited to the regulation it comes from, is $14.99 for a 30-day pass that never renews.

How many questions are on the CertQuestUSA OSHA 10-Hour Construction practice test?

400 questions total, split into 5 full papers of 80 each with no repeats across papers.

What topics does the OSHA 10-Hour Construction test cover?

12 domains, with the heaviest weight on Focus Four: Falls (19%), Introduction to OSHA (13%), and Focus Four: Caught-In or Between (10%).

Where do CertQuestUSA's OSHA 10-Hour Construction questions come from?

Primarily 29 CFR (84%) and OSH Act (4%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.

Is there a free OSHA 10-Hour Construction practice test?

Yes -- one full 80-question practice paper built to the exam's domain weights, free with no sign-up, with every answer explained and a domain-by-domain score at the end.