Question 781 Deck Safety
70% to passAs an extinguishing agent, foam _______________.
A
should be directed at the base of the fire
B
extinguishes by cooling oil fires below ignition temperature
C
is most effective on burning gases which are flowing
D
conducts electricity
AI Explanation
The correct answer is D) foam conducts electricity. Foam is an extinguishing agent that works by creating a blanket over the fire, cutting off the fire's oxygen supply. However, foam is an electrical conductor, so it should not be used on electrical fires as it can transmit the electrical current. This makes foam an ineffective and potentially dangerous choice for extinguishing electrical fires. The other answer choices describe other properties of foam that are correct, but do not address its conductivity, which is the key factor that makes it the wrong choice for electrical fires.
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