Hazard Class 2 corresponds to which type of substance?

Hazard Class 2 corresponds to which type of substance?

• A. Flammable liquids
• B. Gases
• C. Toxic and infectious substances
• D. Corrosives

Answer: (B)

Hazard materials are organized by their form and primary danger, and Class 2 is defined for gases. This includes compressed, liquefied, dissolved, or cryogenic gases, which can pose risks from asphyxiation, flammability, or toxicity depending on the substance. Examples include propane (a flammable gas), oxygen (an oxidizing gas), and chlorine (a toxic gas). The other listed categories correspond to different classes—flammable liquids are Class 3, toxic and infectious substances are Class 6, and corrosives are Class 8. So the substance type described by Hazard Class 2 is gases.

Hazard materials are organized by their form and primary danger, and Class 2 is defined for gases. This includes compressed, liquefied, dissolved, or cryogenic gases, which can pose risks from asphyxiation, flammability, or toxicity depending on the substance. Examples include propane (a flammable gas), oxygen (an oxidizing gas), and chlorine (a toxic gas). The other listed categories correspond to different classes—flammable liquids are Class 3, toxic and infectious substances are Class 6, and corrosives are Class 8. So the substance type described by Hazard Class 2 is gases.