CVOR Dangerous Goods Transportation 2

Question 1

DOT Class 3 hazardous materials are classified as:

Accepted Answer

Flammable liquids

Answer

Class 3 covers flammable liquids, including gasoline, diesel fuel, and acetone, which have a flash point below 60°C (140°F).

Question 2

What is the UN number displayed on hazardous materials labels and placards?

Accepted Answer

A United Nations four-digit identification number for the specific hazardous substance

Answer

UN numbers are internationally recognized four-digit codes assigned by the United Nations to identify specific hazardous substances or article groups.

Question 3

Radioactive materials are classified under which DOT hazard class?

Accepted Answer

Class 7

Answer

Class 7 specifically covers radioactive materials, requiring special handling, shielding, and transport index labeling.

Question 4

Which of the following is NOT a required element on a hazardous materials shipping paper?

Accepted Answer

Driver's commercial license number

Answer

Shipping papers must include the proper shipping name, hazard class, UN/NA number, packing group, and quantity — the driver's license number is not required.

Question 5

When transporting flammable liquids (Class 3), which is the most critical safety precaution?

Accepted Answer

Ensure proper cargo ventilation and keep the load away from all ignition sources

Answer

Flammable liquids emit vapors that can ignite; eliminating ignition sources and ensuring ventilation prevents fire and explosion.

CVOR - Commercial Vehicle Operator’s Registration Practice Test

CVOR - Commercial Vehicle Operator’s Registration Practice Test

CVOR Dangerous Goods Transportation 2