For an MC 312 tank that has rolled over, which content class is most likely?

• A. Corrosive liquid
• B. Flammable gas
• C. Nonhazardous liquid
• D. Radioactive material

Answer: (A)

MC-312 tanks are built to carry corrosive liquids (Class 8). That design makes corrosives the most likely contents if such a tank rolls over, because the tank’s lining, fittings, and overall construction are chosen to handle acids and bases. A rollover would release corrosive cargo, creating risks of chemical burns, eye irritation, and damage to metals and other materials it contacts. The other options don’t align with this tank type: flammable gas would require a tank designed for pressurized gases, nonhazardous liquids aren’t carried in a corrosive-design tank, and radioactive materials need different packaging and labeling beyond the MC-312 designation.