HAZWOPER Practice Test

The HAZWOPER Practice Test is a free beginner-level, 15-minute skill test from Science of Apps. It tests readiness for HAZWOPER training exams — the OSHA 29 CFR 1910.120 rule and training levels, hazard recognition and air monitoring, personal protective equipment and decontamination, and site control and emergency response — written to OSHA 1910.120 and its appendices, OSHA hazard communication and the DOT Emergency Response Guidebook for 2026. HAZWOPER is a United States OSHA requirement; the hazard principles apply worldwide. Score 70% or more on its 15 questions to earn a verifiable HAZWOPER Readiness certificate (SOA-HZ). Every question is based on published standards and research — including 29 CFR 1910.120 Hazardous waste operations and emergency response (OSHA), 29 CFR 1910.120 Appendix B: General description and discussion of the levels of protection (OSHA), Emergency Response Guidebook (ERG) (U.S. DOT PHMSA) — and each answer is explained with its source.

Yes. Science of Apps has a free HAZWOPER Practice Test built on the current exam outline for 2026 and 2027. It covers the standard, hazards and monitoring, PPE and decontamination and site control and emergency response, scores you instantly and issues a verifiable certificate.

Read the three skill areas on this page, then take the 15-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a HAZWOPER Readiness certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: 29 CFR 1910.120 Hazardous waste operations and emergency response (OSHA); 29 CFR 1910.120 Appendix B: General description and discussion of the levels of protection (OSHA); Emergency Response Guidebook (ERG) (U.S. DOT PHMSA); 29 CFR 1910.146 Permit-required confined spaces (OSHA); Permissible exposure limits (PELs) (OSHA); Hazard communication (OSHA). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Three skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: The Standard, Hazards and Monitoring (Scope and training, Hazard recognition and Air monitoring); PPE and Decontamination (Levels of protection, Respirators and Decontamination); Site Control and Emergency Response (Work zones, Response levels and Emergency Response Guidebook). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Hazardous waste site worker, Environmental remediation technician, Hazmat emergency responder, Industrial cleaning or spill response crew and Environmental health and safety officer. It suits anyone who wants a quick, verifiable way to show HAZWOPER knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

OSHA 29 CFR 1910.120 covers workers at uncontrolled hazardous waste clean-up sites, at RCRA treatment, storage and disposal facilities, and those who respond to hazardous substance releases. The hours depend on the role — for example, 40 hours plus supervised field experience for general site workers and an 8-hour refresher every year.

The 40-hour course is for general site workers who may be exposed above permissible limits or need respirators; it is followed by three days of supervised field experience. The 24-hour course, with one day of field experience, is for occasional workers on site for limited tasks and unlikely to be exposed above limits.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

15 questions — 5 from each of 3 skill areas — with a 15-minute limit. You need 70% (11 of 15) to pass and 90% for distinction.

We rate it Beginner: no experience needed: fundamentals and clear reasoning. It has 15 scenario questions — 5 from each of 3 skill areas — and a 15-minute limit. You need 70% (11 of 15) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.