A wet-chemical fire extinguisher uses wet-chemical agents to extinguish _____ fires.

A wet-chemical fire extinguisher uses wet-chemical agents to extinguish _____ fires.

• A. Class A
• B. Class B
• C. Class C
• D. Class K

Answer: (D)

Wet-chemical extinguishing agents are designed specifically for fires involving cooking fats and oils. They work by saponifying fats, turning them into a soapy layer that cools and smothers the fire, creating a barrier that prevents splatter and reignition. Because of this action, they are used for cooking-oil and fat fires (Class K). They aren’t meant for ordinary combustibles like wood or paper, flammable liquids, or electrical fires, which require different types of extinguishing agents.

Wet-chemical extinguishing agents are designed specifically for fires involving cooking fats and oils. They work by saponifying fats, turning them into a soapy layer that cools and smothers the fire, creating a barrier that prevents splatter and reignition. Because of this action, they are used for cooking-oil and fat fires (Class K). They aren’t meant for ordinary combustibles like wood or paper, flammable liquids, or electrical fires, which require different types of extinguishing agents.