CHMM Practice Test 2026 — Free CHMM Exam Prep Questions
The CHMM is IHMM's ANSI-accredited credential for professionals who manage hazardous materials, hazardous waste, dangerous goods transport and related environmental, health and safety programs. This practice set covers all 12 domains of the CHMM blueprint with scenario questions on RCRA, DOT hazmat, EPCRA/CERCLA reporting, OSHA HAZWOPER, remediation and environmental due diligence.
A mixture is classified as Flammable Liquid Category 3, Skin Corrosion Category 1B and Acute Toxicity (oral) Category 4. Under HCS Appendix C, which label elements are correct?
CHMM format, scoring & key facts
Computer-based through the Kryterion network, at a Kryterion test center or by live remote online proctoring. Closed book. An on-screen calculator and scratch space are provided; at test centers a calculator with no programmable memory (four-function or nonprogrammable scientific) may be used. You can mark, skip and return to any question before submitting.
| Blueprint | CHMM Exam Specifications (Blueprint), effective October 2020 (rev. May 2021): 12 domains |
|---|---|
| Questions | 140 multiple-choice questions, four options each, plus a few unscored test questions |
| Time | 3 hours |
| Passing score | 700 on a 0–1000 scaled score |
| Calculator | On-screen calculator and scratch space; closed book |
| Delivery | Kryterion test centers or live remote online proctoring |
| Largest domains | Health and Safety 10.57%; Shipping and Transporting Hazardous Waste and Hazardous Materials 10.34% |
| Eligibility | Bachelor's degree plus 4 years of relevant experience |
| Fee | $175 application + $360 exam |
| Recertification | 200 maintenance points every 5 years |
Facts last verified Oct 18, 2026. Source: ihmm.org/chmm/. Always confirm details with IHMM before your exam.
When can you take the CHMM?
After IHMM approves your application you have 12 months to schedule and sit the exam at a Kryterion test center or online with a live remote proctor. Rescheduling at least 72 hours ahead is free.
Plan backwards from your exam date
What the CHMM covers
Every PrepBanq CHMM test mirrors the official domain weights.
Domain distribution
% of the exam| Content domain | Weight | ≈ Questions on exam | Our practice questions |
|---|---|---|---|
Planning for Materials with Hazards | 9.35% | ~13 | 14 questions → |
Shipping and Transporting Hazardous Waste and Hazardous Materials | 10.34% | ~14 | 15 questions → |
Store Materials with Hazard | 9.22% | ~13 | 14 questions → |
Facility Operations Involving Materials with Hazards | 9.12% | ~13 | 14 questions → |
Disposition of Materials with Hazards | 8.46% | ~12 | 13 questions → |
Record Keeping and Reporting | 7.49% | ~10 | 11 questions → |
Training Personnel | 8.07% | ~11 | 12 questions → |
Response and Recovery | 7.95% | ~11 | 12 questions → |
Remediation | 6.5% | ~9 | 10 questions → |
Management Systems | 6.58% | ~9 | 10 questions → |
Environmental Studies | 6.35% | ~9 | 9 questions → |
Health and Safety | 10.57% | ~15 | 16 questions → |
How to register for the CHMM
Eligibility
A bachelor's degree or higher from an accredited college or university (no waiver; foreign degrees need an equivalency evaluation) plus at least four years of relevant experience in hazardous materials management or a related field.
Retake policy
Retake as soon as you are ready, within 12 months of your last exam. The second and third attempts need only a retake fee, not a new application. After a third failure, wait at least one year and reapply with full fees.
Score release
Unofficial pass/fail on screen at the end of the exam; official results by email within about three weeks, with a breakdown by area.
Credential renewal
Five-year certification cycle: recertify with 200 certification maintenance points (or by exam) and pay the annual maintenance fee.
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CHMM FAQ
How many questions are on the CHMM?
The CHMM has 140 questions and you have 3 hours to finish. Question types: Multiple choice with four options and one correct answer. A few extra unscored test questions may be included. No penalty for wrong answers..
How long is the CHMM exam?
Testing time for the CHMM is 3 hours.
What is the passing score for the CHMM?
CHMM passing standard: Scaled score of 700 on a 0–1000 scale, based on the overall score (no per-domain pass required). Score range: 0–1000.
How much does the CHMM cost?
The CHMM registration fee is $175 application (nonrefundable) + $360 examination, per the IHMM CHMM page; then an annual certification maintenance fee. Check the official site for current fees before you register.
What is on the CHMM?
The CHMM covers Planning for Materials with Hazards (about 9.35%), Shipping and Transporting Hazardous Waste and Hazardous Materials (about 10.34%), Store Materials with Hazard (about 9.22%), Facility Operations Involving Materials with Hazards (about 9.12%), Disposition of Materials with Hazards (about 8.46%), Record Keeping and Reporting (about 7.49%), Training Personnel (about 8.07%), Response and Recovery (about 7.95%), Remediation (about 6.5%), Management Systems (about 6.58%), Environmental Studies (about 6.35%), Health and Safety (about 10.57%).
Who administers the CHMM?
The Certified Hazardous Materials Manager (CHMM) Exam is administered by IHMM. Delivery: Computer-based through the Kryterion network, at a Kryterion test center or by live remote online proctoring. Closed book. An on-screen calculator and scratch space are provided; at test centers a calculator with no programmable memory (four-function or nonprogrammable scientific) may be used. You can mark, skip and return to any question before submitting.
Can you retake the CHMM?
Retake as soon as you are ready, within 12 months of your last exam. The second and third attempts need only a retake fee, not a new application. After a third failure, wait at least one year and reapply with full fees.
Is there a free CHMM practice test?
Yes. PrepBanq has 15 free CHMM practice tests with 150 exam-style questions in the real CHMM formats, and every answer is explained. No credit card is needed.
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