The DOT Hazard Class 1 consists of:

The DOT Hazard Class 1 consists of:

• A. Explosives
• B. Gases
• C. Corrosives
• D. Radioactive materials

Answer: (A)

Explosives form the DOT Hazard Class 1 because this class is specifically for materials that release energy rapidly, typically through detonation or a violent explosive reaction. These substances can produce a blast, shock wave, heat, and fragmenting effects, so they require strict handling, packaging, and segregation during transport. Examples include TNT, dynamite, blasting caps, and fireworks. The other options describe different hazards: gases belong to Class 2, corrosives to Class 8, and radioactive materials to Class 7, none of which are defined by an explosive energy release.

Explosives form the DOT Hazard Class 1 because this class is specifically for materials that release energy rapidly, typically through detonation or a violent explosive reaction. These substances can produce a blast, shock wave, heat, and fragmenting effects, so they require strict handling, packaging, and segregation during transport. Examples include TNT, dynamite, blasting caps, and fireworks. The other options describe different hazards: gases belong to Class 2, corrosives to Class 8, and radioactive materials to Class 7, none of which are defined by an explosive energy release.