NFPA Portable Fire Extinguishers (NFPA 10) Practice Exam

Question: 1 / 400

Which type of fire extinguisher is specifically designed for cooking oils?

Class A extinguisher

Class B extinguisher

Class C extinguisher

Class K extinguisher

The correct choice is specifically designed for extinguishing fires that involve cooking oils and fats, commonly found in commercial kitchens. Class K extinguishers are formulated with agents that are effective against high-temperature cooking oils, such as those derived from animal fats or vegetable oils. These extinguishers use wet chemical agents that can cool and smother the fire, preventing re-ignition.

In contrast, other types of extinguishers are not suitable for this purpose. Class A extinguishers are designed for ordinary combustibles like wood, paper, and textiles, while Class B extinguishers are meant for flammable liquids such as gasoline and oil, but they do not specifically address the unique nature and challenges of cooking oil fires. Class C extinguishers are intended for electrical fires and also do not cater to cooking oil fires. Therefore, Class K extinguishers are the appropriate choice in the context of kitchen fires involving cooking oils.

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