A Class K fire is best defined as involving which?

A Class K fire is best defined as involving which?

• A. Wood
• B. Oils
• C. Water
• D. Combustible cooking media

Answer: (D)

Fires that involve cooking fats and oils fall under Class K. This category is specifically for combustible cooking media used in commercial kitchens, such as vegetable oils and animal fats. That’s why describing the fire as involving combustible cooking media is the best answer—it's pointing to the exact fuels involved. Other fire types cover different fuels: wood is an ordinary combustibles fire (Class A), general flammable liquids outside of cooking contexts are Class B, electrical equipment fires are Class C, and metal fires are Class D. In real-world practice, water should not be used on cooking-oil fires; instead, kitchens use Class K extinguishers or wet-chemical agents that saponify fats and help cool and contain the fire.

Fires that involve cooking fats and oils fall under Class K. This category is specifically for combustible cooking media used in commercial kitchens, such as vegetable oils and animal fats. That’s why describing the fire as involving combustible cooking media is the best answer—it's pointing to the exact fuels involved. Other fire types cover different fuels: wood is an ordinary combustibles fire (Class A), general flammable liquids outside of cooking contexts are Class B, electrical equipment fires are Class C, and metal fires are Class D. In real-world practice, water should not be used on cooking-oil fires; instead, kitchens use Class K extinguishers or wet-chemical agents that saponify fats and help cool and contain the fire.