The DOT Hazard Class 1 consists of:

The DOT Hazard Class 1 consists of:

• A. Flammable solids
• B. Poisons
• C. Explosives
• D. Corrosives

Answer: (C)

DOT Hazard Class 1 is the category for explosives—materials that can detonate or release a lot of energy rapidly, causing a blast and potential projection of fragments. That’s why explosives is the best match for this question; it directly names the hazard type defined by Class 1. Flammable solids, poisons, and corrosives belong to other hazard classes, not Class 1. Flammable solids are prone to ignition through friction or heat, poisons are toxic substances, and corrosives cause severe burns or material damage. Knowing which class each hazard belongs to helps responders and shippers handle and segregate materials safely.

DOT Hazard Class 1 is the category for explosives—materials that can detonate or release a lot of energy rapidly, causing a blast and potential projection of fragments. That’s why explosives is the best match for this question; it directly names the hazard type defined by Class 1.

Flammable solids, poisons, and corrosives belong to other hazard classes, not Class 1. Flammable solids are prone to ignition through friction or heat, poisons are toxic substances, and corrosives cause severe burns or material damage. Knowing which class each hazard belongs to helps responders and shippers handle and segregate materials safely.