Which class includes combustible metals such as potassium and sodium?

Which class includes combustible metals such as potassium and sodium?

• A. Normal Combustibles
• B. Electrical
• C. Cooking Oils
• D. Combustible metals

Answer: (D)

Combustible metals are metals that can burn in air and require special handling and extinguishing methods. Potassium and sodium are examples of highly reactive alkali metals; they ignite readily and can react violently with water or moisture. Fires involving these metals don’t respond to ordinary extinguishers or water, and are best controlled with a dry powder designed for metal fires. Other categories cover different materials—normal combustibles are things like wood and paper, electrical fires involve energized equipment, and cooking oil fires need a specific agent for oils/fats. So the correct class is combustible metals.

Combustible metals are metals that can burn in air and require special handling and extinguishing methods. Potassium and sodium are examples of highly reactive alkali metals; they ignite readily and can react violently with water or moisture. Fires involving these metals don’t respond to ordinary extinguishers or water, and are best controlled with a dry powder designed for metal fires. Other categories cover different materials—normal combustibles are things like wood and paper, electrical fires involve energized equipment, and cooking oil fires need a specific agent for oils/fats. So the correct class is combustible metals.