Question An indicator that cargo contains hazardous materials is: Answers The cargo is stored in cylinder tanks. The cargo is picked up from a supermarket. The cargo is packaged in cardboard boxes. Explanation Packaging can be an indicator of whether or not materials are hazardous. Cylinders and drums are often used to hold and transport hazardous materials. Take a FREE Practice Test Now This questions appears in the following tests: Alaska HazMat , Delaware HazMat , Idaho HazMat , Iowa HazMat , Kentucky HazMat , Maryland HazMat , Michigan HazMat , Missouri HazMat , Montana HazMat , Oregon HazMat , Washington HazMat , Wisconsin HazMat , Ohio Tank ,