Class 9: Miscellaneous Dangerous Goods includes materials that

• A. Are exclusively radioactive
• B. Present limited risks during transport and do not fit into the other eight classes
• C. Are only gases
• D. Are only explosives

Answer: (B)

Class 9 is a catch‑all category for dangerous goods that still pose a hazard in transit but don’t neatly fit into any of the other eight classes. It covers materials with unusual properties, multiple hazards, or those that don’t belong to the standard class definitions, such as certain environmentally hazardous substances or items like lithium batteries. The other classes are reserved for specific hazard types—radioactive materials are handled under the radioactive class, gases under the gaseous class, and explosives under the explosives class—so those options don’t describe what Class 9 is about. The choice that says these miscellaneous goods present hazards during transport and don’t fit into the other eight classes best matches how this category is defined and used.