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Portable Fire Extinguishers Practice Test

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Wet chemicals, dry powders, and water with additives are all examples of _____.
Correct Answer:
Extinguishing agents
Explanation:
Extinguishing agents are substances used to control and put out fires by cooling, smothering, or interrupting the chemical reactions in the flame. Wet chemical is designed for cooking-oil fires and works by saponifying fats and creating a soapy layer that cools the oil and prevents reignition. Dry powders act by interrupting the chemical reactions in the flame and forming a coating on the fuel, making them effective on a range of fire types. Water with additives improves cooling and spreading, helping blanket the fire and boost heat absorption. These substances are all extinguishing agents, not fire starters or fuels.

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