Which class corresponds to explosives in the IATA DGR?

• A. Class 3 Flammable liquids.
• B. Class 1 Explosives.
• C. Class 7 Radioactive material.
• D. Class 9 Miscellaneous dangerous goods.

Answer: (B)

In the IATA DGR, dangerous goods are grouped by hazard into classes, and explosives are categorized as Class 1. The other options correspond to different hazards: flammable liquids are Class 3, radioactive material is Class 7, and miscellaneous dangerous goods fall under Class 9. So the reason this choice is correct is that it identifies explosives with the correct class number, Class 1, which governs their specific packaging, labeling, and handling requirements. Within Class 1 there are further divisions (1.1–1.6) based on the level of explosion hazard, but recognizing that explosives belong to Class 1 is the key idea.