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Washington CDL: Hazardous Materials Practice Test

20 hazardous materials questions for the Washington CDL Knowledge Test, out of 193 in the app. Answer each to see whether you got it right and why. The real Washington Hazardous Materials test has 30 questions and you need 24 correct (80%) to pass.

How it works

  1. 1Pick an answer20 questions, one tap each.
  2. 2See the ruleRight or wrong, every answer is explained.
  3. 3Get your scoreCompared with the real 80% pass mark.
Start the test
0/20 answered0 correctPass mark 80%
  1. 1Question 1 of 20

    The total transport index of all radioactive material packages in a single vehicle must not exceed

  2. 2Question 2 of 20

    According to federal regulations, emergency response information for a hazmat spill or leak must include which of the following?

  3. 3Question 3 of 20

    How can you be sure that a package you are transporting does NOT contain hazardous materials?

  4. 4Question 4 of 20

    Your vehicle contains 500 pounds each of Division 1.1 materials and Division 1.2 materials. The vehicle must have

  5. 5Question 5 of 20

    Identification numbers are preceded by the letters "UN" or "NA." The letters "NA" are associated with proper shipping names that are used where?

  6. 6Question 6 of 20

    Which of these types of cargo tanks is commonly used to carry gasoline?

  7. 7Question 7 of 20

    What does the letter 'I' mean in Column 1 of the Hazardous Materials Table?

  8. 8Question 8 of 20

    Cargo tanks are

  9. 9Question 9 of 20

    You may let someone else watch your vehicle only if it's

  10. 10Question 10 of 20

    Which of the following are necessary qualifications for non-bulk packaging?

  11. 11Question 11 of 20

    When transporting Division 1.1, 1.2, or 1.3 explosives, you must

  12. 12Question 12 of 20

    If there is an accident involving hazardous materials, who reports it to the proper government agency?

  13. 13Question 13 of 20

    If the words INHALATION HAZARD appear on the shipping paper or package, the rules require display of

  14. 14Question 14 of 20

    Placards must be at least _______ from all other markings.

  15. 15Question 15 of 20

    At a rest stop, you discover that your hazardous materials shipment is leaking but there is no phone available. What do you do?

  16. 16Question 16 of 20

    What is a technical name?

  17. 17Question 17 of 20

    What are the major differences between cargo tanks and portable tanks?

  18. 18Question 18 of 20

    You find an overheated tire during an en-route inspection. If you are hauling hazardous materials, you must

  19. 19Question 19 of 20

    How often should you check the tires on a placarded trailer that has dual tires?

  20. 20Question 20 of 20

    Whose signatures must be on a Hazardous Waste Manifest?

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Questions people ask

Is this Washington CDL: Hazardous Materials Practice Test like the real Washington CDL Knowledge Test?

The questions are written in the same style as the real test, from official sources, with an explanation for each answer. The real test has 30 questions; this free test has 20.

How many questions are on the Washington CDL Knowledge Test?

The General Knowledge test has 30 questions. Each class and endorsement adds its own test.

What score do you need to pass the Washington CDL Knowledge Test?

You need 24 out of 30 correct (80%).

How old do you have to be to take the Washington CDL Knowledge Test?

You can take it from age 18.

Where can I practice more questions?

The Driving Exam Prep app has the full question bank for your test, a step-by-step roadmap, a mistakes review and a readiness score against the real pass mark.

Official sources

Our questions are written from these official sources. Always study your official handbook too: rules change, and our practice questions may differ from your real test.

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