Practice tests · NFPA 470
Hazardous Materials Operations
782 exam-style questions across 7 chapters, each with an explanation of why the right answer is right.
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What a test looks like
Practice
25, 50 or 100 questions. See the right answer and the reason straight after each one.
Exam
25, 50 or 100 questions with no feedback until you submit. Then your score, your weakest areas and every miss explained.
Chapter practice
Pick the chapters you want to work on and drill just those.
Every test is a fresh draw from the whole guide, with the answer options reshuffled. Questions you have seen recently are held back until the pool runs low.
What the exam covers
The operations-level exam covers the properties and effects of hazardous materials, understanding the hazards, estimating potential harm and planning a response, implementing the planned response, and responder health and safety, plus the mission-specific competencies for personal protective equipment and product control.
Written to NFPA 470 (2022 edition), Chapter 7, with the mission-specific sections for PPE (9.2) and product control (9.6), and Emergency Response Guidebook questions checked against ERG 2024.
In Manitoba this guide matches the theory for MESC course 998925, Hazardous Materials Operations, which MESC requires before it issues Fire Fighting Level I seals.
Firehouse Fundamentals is a study aid for the written exam. It does not certify anyone; your training program and certifying body set and mark the exam.
Try a question
From the free sample: the kind of question every Hazardous Materials Operations test is made of, with the explanation you get after each answer.
Properties and Effects
Why must you think carefully before putting water on a chemical spill?
Show the answer
It may react, run off or spread the product
Applying water can leave an incident worse than the original problem: it can cause a reaction or incompatibility, create contaminated runoff, or spread the spill over a larger area. It does not lower a product's flash point.
Chapters in this guide
- Properties and Effects
- Understanding the Hazards
- Estimating Potential Harm and Planning a Response
- Implementing the Planned Response
- Responder Health and Safety
- Personal Protective Equipment
- Product Control