HAZMAT CDL Practice Test

Which hazard class includes mass explosion materials such as dynamite?

1. Hazard Class 1

2. Hazard Class 2

3. Hazard Class 3

4. Hazard Class 4

The correct answer is: Hazard Class 1

Hazard Class 1 is designated for explosives, which includes materials that can cause mass explosions. Dynamite, specifically, falls into this category as it is a high explosive that can detonate under certain conditions, releasing a tremendous amount of energy quickly. This class encompasses various categories of explosives, including blasting agents and safety explosives, all of which are characterized by their potential to cause immediate and significant hazards during transport and handling. The other hazard classes deal with different types of risks: Hazard Class 2 pertains to gases, Hazard Class 3 is for flammable liquids, and Hazard Class 4 covers flammable solids and other materials that are reactive or may emit flammable vapors. Therefore, the classification of dynamite under Hazard Class 1 reflects its status as a material that presents a threat of a powerful explosion, which is not the focus of the other classes.