Containers of nitric acid should be: Question Containers of nitric acid should be: Answers Stacked no more than two containers high. Stacked to the ceiling. Loaded on top of other products. Loaded in the cabin. Explanation Nitric acid should not be stacked above any other product. Containers of nitric acid may be stacked, but no higher than two containers high. This questions appears in the following tests: Delaware HazMat District Of Columbia HazMat Georgia HazMat Massachusetts HazMat Montana HazMat Montana Tank New Jersey HazMat Utah HazMat Wisconsin HazMat