Question A Class 7 hazardous material is: Answers Explosive. Flammable. Radioactive. Corrosive. Explanation Radioactive materials are categorized as Class 7 hazardous materials. This questions appears in the following tests: Alabama HazMat Arkansas HazMat Delaware HazMat Delaware Tank Florida HazMat Georgia HazMat Massachusetts HazMat Minnesota HazMat Montana HazMat Nevada HazMat New Hampshire HazMat New Jersey HazMat New Jersey HazMat New York HazMat New York HazMat North Carolina Tank Pennsylvania Tank Tennessee HazMat Wyoming HazMat