Trade certification · Hazardous waste
OSHA HAZWOPER 40-Hour (29 CFR 1910.120) course final exam
The final exam of a 40-hour HAZWOPER course for general site workers: scope and definitions, the site safety and health plan, site characterization and air monitoring, site control and the buddy system, training and medical surveillance, Levels A–D PPE and respirators, drum handling, decontamination, emergency response and the ICS, and chemical hazard data from the NIOSH Pocket Guide.
Questions last checked against the official sources on October 11, 2026.
The real exam at a glance
- Training
- 40 hours off site + 3 days supervised field experience (general site workers)
- Refresher
- 8 hours every year
- Supervisors
- 8 extra hours of specialized training
- Test
- Set by the training provider
- Rule
- OSHA 29 CFR 1910.120 (HAZWOPER)
What you'll practise
Try a question
An employee's non-impermeable clothing gets wet with a hazardous substance. They must:
- Remove it immediately and shower
- Let it dry out in the sun
- Finish the shift and then change
- Wipe it off with a rag
Show the answer
A. Remove it immediately and shower — 1910.120(k)(5)(ii) requires immediate removal and showering.
Sample questions by topic (in English)
- Scope and definitions
- Safety and health program
- Site characterization and monitoring
- Training
- Medical surveillance
- PPE and respiratory protection
- Drums and containers
- Decontamination
- Emergency response
- Chemical hazards (NIOSH Pocket Guide)
Ask the examiner
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Questions about the HAZWOPER 40-Hour
Is this the official HAZWOPER 40-Hour?
No. Semplr is independent and not affiliated with the exam body. We write every question ourselves, in the official format and at the official level.
What is the real HAZWOPER 40-Hour like?
Training: 40 hours off site + 3 days supervised field experience (general site workers). Refresher: 8 hours every year. Supervisors: 8 extra hours of specialized training. Test: Set by the training provider. Rule: OSHA 29 CFR 1910.120 (HAZWOPER).
How is my practice marked?
Instantly. You see your score against the pass mark, and an explanation for every question — including the ones you got right.
Can I take it on my phone?
Yes. The whole mock exam works on a phone, and your progress is saved in your browser.
Ready for a full run?
One sitting, real timing, then your score against the pass mark.
Start the free mock exam