Question 22 of 30
When water fog is used as an extinguishing agent, the fire is extinguished principally by the:
A
Displacement of active fuel structures safely
B
Absorption of heat
C
Exclusion of atmospheric nitrogen elements
D
Chemical breakdown of active free radicals
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Answer & Explanation
The correct answer is Option B: Absorption of heat.
When water fog is applied to a fire, its primary extinguishing mechanism is the rapid absorption of heat. As the water vaporizes into steam, it cools the fuel below its ignition temperature.