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.

Division 4.3 materials are characterized as:

Flammable when dry
Dangerous when wet
Highly explosive
Self-reactive

The correct answer is: Dangerous when wet

Division 4.3 materials are classified as "dangerous when wet" because they include substances that can react with water to produce flammable gases or other hazardous materials. This classification highlights the significant risks posed when these materials come into contact with moisture, which may lead to fires, explosions, and toxic gas releases. Understanding the behavior of these materials in various conditions, particularly their reactivity to water, is crucial for safe handling and transportation in the trucking industry. Ensuring all safety protocols around these materials are followed is essential to prevent accidents and ensure public safety.