What are the major hazard classes in hazardous materials?

The major hazard classes in hazardous materials are categorized based on the type of danger they present. The correct choice identifies the comprehensive set of these classes as explosive, gas, flammable liquid, flammable solid, oxidizer, toxic, and radioactive. Each of these categories plays a crucial role in ensuring safe handling, storage, and transportation of hazardous materials.

Explosive materials can create an explosion under certain conditions, posing serious risks during transport and storage. Gases can present hazards related to flammability, toxicity, or as asphyxiants, which necessitate specific handling procedures. Flammable liquids are capable of igniting and combusting easily, making their safe management paramount in preventing fires. Flammable solids can also ignite through friction or heat exposure. Oxidizers can cause or enhance the combustion of other materials, necessitating careful segregation from combustible substances. Toxic materials pose health risks through exposure, requiring stringent safety measures. Finally, radioactive materials pose a unique risk due to their potential to emit harmful radiation.

This classification enables transporters, handlers, and regulators to implement appropriate safety measures that correspond to the level and type of hazard involved. Other choices fall short by either omitting critical hazard classes or including classifications that do not represent the primary hazards recognized by