A Class 1 hazardous material is: 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 A Class 1 hazardous material is: Answers An explosive. Solid. Corrosive. Explanation Explosives are placed in hazardous materials Class 1. This questions appears in the following tests: Louisiana Double Minnesota HazMat Oklahoma Class B Knowledge Test Utah Class B Knowledge Test Utah Tank Virginia Class A Knowledge Test