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CDL Hazardous Materials (H) Endorsement Test

Hazard classes: practice questions

Our CDL Hazmat bank has 20 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1

What is Division 6.2?

  1. Poisonous liquids
  2. Infectious substances
  3. Radioactive materials
  4. Corrosive solids
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B. Infectious substances — Division 6.2 is infectious substances, for example anthrax (CDL Manual Figure 9.1)

Question 2

Blasting agents are a typical example of which division?

  1. 1.2 Projection hazard
  2. 1.6 Extremely insensitive
  3. 5.1 Oxidizer
  4. 1.5 Very insensitive
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D. 1.5 Very insensitive — The manual gives blasting agents as the example for Division 1.5 (very insensitive) (CDL Manual Figure 9.1)

Question 3

Which division covers materials that are dangerous when wet?

  1. 4.1
  2. 4.2
  3. 4.3
  4. 5.1
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C. 4.3 — Division 4.1 flammable solids, 4.2 spontaneously combustible, 4.3 dangerous when wet (CDL Manual Figure 9.1)

Question 4

Which class covers miscellaneous hazardous materials such as PCBs?

  1. Class 6
  2. Class 7
  3. Class 8
  4. Class 9
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D. Class 9 — Class 9 is miscellaneous hazardous materials, for example polychlorinated biphenyls (PCB) (CDL Manual Figure 9.1)

Question 5

Potassium cyanide belongs to which division?

  1. 6.2 Infectious substance
  2. 8 Corrosive
  3. 6.1 Poison
  4. 2.3 Poison gas
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C. 6.1 Poison — Potassium cyanide is the manual's example of Division 6.1, poison (toxic material) (CDL Manual Figure 9.1)

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