Which of the following is defined as class one hazards?

Class one hazards are defined as explosives. This classification encompasses materials that are capable of undergoing a rapid chemical reaction, producing gas and pressure, which can lead to an explosion. This includes a wide variety of substances, from fireworks to military munitions, that pose significant risks during transport and handling due to their unstable nature.

Understanding the distinction of class one hazards as explosives is crucial for emergency responders, as the response protocols and safety measures differ significantly from those associated with flammable liquids, oxidizing substances, or organic peroxides, which fall into other hazard classes. Ensuring safety during incidents involving explosives requires specific knowledge of their properties, potential risks, and appropriate ways to mitigate them, making the identification of such hazards vital in emergency response situations.