CDL (Commercial Driver)
CDL Hazardous Materials (H) Practice Test 10
Free — no payment neededLevel: Mixed
20 original CDL Hazardous Materials (H) questions based on the federal motor carrier safety rules (49 CFR). Practice test, not affiliated with any government agency.
Created by AI
Practice test, not affiliated with any government agency. Original questions written from public sources, checked by a second AI reviewer and automated checks. Rules change; confirm with the official handbook.
Before you start
- Questions
- 20 multiple-choice questions, one at a time
- Time
- About 12 minutes. Untimed — take as long as you need.
- Pass mark
- 16 out of 20 correct (80%)
- Feedback
- Your score, the correct answers and short explanations when you finish
- Account
- Not needed. Your answers stay in this browser.
What this test covers
Marking labeling placardingLoading and segregationHazmat driving and parkingHazmat classes and shipping papersEmergency responseBulk packaging and tanks
Preview the first question
A package holds a liquid that is poisonous by inhalation. Which words must be marked in association with the labels or placards?
- Toxic Air
- Breathe Carefully
- Vapor Warning
- Inhalation Hazard
Answers are revealed on the results page after you finish.