MN CDL HAZMAT PRACTICE TEST
21.
Before transporting sealed loads, you should check that:
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the seal numbers match the placard numbers.
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the load can be inspected.
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the load is properly secured.
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All of the above.
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22.
For a cargo fire in a box trailer, you should:
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open the doors immediately and use the fire extinguisher.
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keep the doors shut.
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wait 10 minutes before opening the doors.
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use the fire extinguisher on the doors.
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23.
When your drive wheels have poor traction, you should:
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turn the retarder on.
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only use the retarder on the front wheels.
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only use the retarder on the rear wheels.
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turn the retarder off.
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24.
When you're going uphill and a heavy load is slowing you down, you should:
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stay in the left lane if you can.
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shift into a lower gear.
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pass another slow vehicle to gain speed.
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drive on the shoulder if you can.
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25.
What should you do if your vehicle starts hydroplaning?
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Accelerate slightly, then push in the clutch to slow down.
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Release the accelerator and push in the clutch to let the wheels turn freely.
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Apply the brakes and countersteer to regain control of the vehicle.
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Leave the road completely.
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26.
When the temperature drops:
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bridges will freeze before the road will.
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bridges usually freeze after other parts of the roadway.
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bridges will not freeze.
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None of the above.
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27.
The emergency response information must include all of the following except:
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Value of the materials.
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Risks of fire or explosion
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The basic description and technical name
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Immediate hazards to health
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28.
If you hear a loud loud "bang" and the steering feels "heavy", you should:
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brake hard and pull off the road.
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hold the steering wheel firmly and stay off the brake.
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check your rearview mirrors to see if you have a flat tire.
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pump the brakes until the vehicle has slowed down.
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29.
Which of the following is NOT correct? Anti-lock brakes:
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help drivers avoid wheel lock up.
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help drivers avoid skids caused by over braking.
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give drivers more control over the vehicle during braking.
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require drivers to apply the brakes as hard as they can without locking the wheels.
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30.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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left; right
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right; left
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left; left
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right; right
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