Which of the following is NOT a class of HAZMAT?

Biological hazards are not classified as a type of hazardous material (HAZMAT) in the same context as corrosives, flammable liquids, and oxidizing substances. HAZMAT classifications typically focus on materials that pose physical or chemical hazards. Corrosives are known for their ability to cause damage to living tissue or materials upon contact. Flammable liquids are recognized for their ability to ignite easily and pose fire risks. Oxidizing substances can cause or enhance the combustion of other materials.

In contrast, biological hazards refer to pathogens, bacteria, or viruses that can pose a risk primarily through biological exposure, and they are often categorized separately under biosafety regulations rather than traditional HAZMAT classes. This distinction highlights the different approaches to handling and responding to these types of risks.