HAZMAT CDL Practice Test

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Get ready for your HAZMAT CDL Test. Use multiple-choice questions and detailed explanations to solidify your understanding. Enhance your preparedness for the exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

How many different hazard classes are recognized?

The correct answer is: 9

The correct answer is that there are nine different hazard classes recognized in the transportation of hazardous materials. These classes are established by the United Nations (UN) and are a critical part of addressing how various hazardous materials should be handled during transportation. The nine classes include: 1. Explosives 2. Gases (compressed, liquefied, or dissolved under pressure) 3. Flammable liquids 4. Flammable solids 5. Oxidizing substances and organic peroxides 6. Toxic and infectious substances 7. Radioactive materials 8. Corrosive substances 9. Miscellaneous hazardous materials Each class has specific regulations and requirements concerning their handling, packaging, labeling, and documentation. Recognizing the correct number of hazard classes is essential for anyone involved in the transportation of hazardous materials, as it ensures compliance with safety protocols and regulations to prevent accidents and ensure the safety of personnel and the public.