Question 837 Deck Safety

The correct answer is B) does little or no cooling. The reason this is correct is that dry chemical extinguishers are effective on Class B (flammable liquid) fires by smothering the fire and interrupting the chemical reaction, but they do not actually cool the fuel source. This means that the fuel can easily reignite or "reflash" after the dry chemical agent has been dispersed. In contrast, water-based extinguishers are more effective at Class B fires because they provide cooling to the fuel, reducing the likelihood of reflash. The other answer choices are incorrect because A) dissipates quickly is not the main reason for reflash risk, C) is rapidly absorbed by the liquid is not accurate, and D) is not an effective agent on Class B fires is false, as dry chemical extinguishers are in fact effective on Class B fires, just with the risk of reflash.