CDL Hazardous Materials (H) Endorsement Test
Loading and unloading: practice questions
Our CDL Hazmat bank has 22 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
Which hazard class uses a transport index to control how much may be loaded?
- Class 1 explosives
- Class 7 radioactive
- Class 3 flammable liquids
- Class 8 corrosives
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B. Class 7 radioactive — Some Class 7 packages bear a transport index that controls how many may be loaded together (CDL Manual 9.4.1)
Question 2
Corrosive liquids must never be loaded with which of these?
- Division 2.2 non-flammable gases
- Class 9 miscellaneous materials
- Division 4.2 spontaneously combustible materials
- Combustible liquids
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C. Division 4.2 spontaneously combustible materials — Never load corrosive liquids with 1.1, 1.2, 1.3, 1.5, 2.3 Zone A, 4.2 or 6.1 PG I Zone A (CDL Manual 9.4.1)
Question 3
Which of these counts as foodstuff for the poison loading rule?
- Toothpaste
- Skin cream
- Mouthwash
- Anything you swallow
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D. Anything you swallow — Foodstuffs are anything you swallow; mouthwash, toothpaste and skin creams are not foodstuff (CDL Manual Figure 9.9)
Question 4
How should you hand-load breakable containers of corrosive liquid?
- Several at a time, on their sides
- Rolled into place
- One by one, right side up
- Stacked as high as possible
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C. One by one, right side up — Load breakable containers of corrosive liquid one by one, right side up; do not drop or roll them (CDL Manual 9.4.1)
Question 5
Before loading or unloading any explosives, what should you do with the engine?
- Keep it at fast idle
- Run it to power the heater
- Leave it running in gear
- Turn it off
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D. Turn it off — Turn your engine off before loading or unloading any explosives (CDL Manual 9.4.1)