What generally distinguishes Class 1 hazardous materials from the other hazard classes?

Pick an answer

1. Class 1 covers only flammable liquids
2. Class 1 covers only radioactive materials
3. Class 1 is reserved exclusively for materials transported by air, not by truck or rail under any circumstance, a mistake that overlooks the real risk involved in that situation
4. Class 1 covers explosives, which have their own set of divisions based on the type and severity of explosion hazard

Correct!

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