Flammable gases are categorized as ____ hazards. Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Flammable gases are categorized as ____ hazards. Answers Class 1 Class 2 Class 4 Class 7 Explanation Flammable gases are assigned to hazardous materials Class 2. This questions appears in the following tests: Colorado Tank Florida HazMat Florida HazMat Indiana HazMat Massachusetts HazMat Montana HazMat North Carolina HazMat South Dakota HazMat Tennessee HazMat Texas HazMat Utah HazMat West Virginia HazMat Wisconsin HazMat