2026 Hazardous Materials Practice Test – Comprehensive Guide to Master Identification, Response, and Safety Procedures!

Cooking oil fires involve fats and oils that burn hot and can react badly with water. The appropriate fire class for these fires is Class K. Extinguishers labeled Class K are designed for commercial kitchens and release a wet chemical agent that saponifies fats, turning them into a soapy layer that cools and smothers the oil, helping prevent reignition. This approach is specifically tailored to cooking media, unlike Class A for ordinary combustibles (wood, paper), Class B for flammable liquids (gasoline, solvents), or Class C for electrical fires. So Class K is the best choice for fires involving cooking oils.