Question 2 of 30
In advanced firefighting, what is the purpose of using a Class A foam?
A
A) To cool down hot surfaces
B
B) To suppress flammable gas release
C
C) To control oil and fuel fires
D
D) To neutralize acidic fumes
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Answer & Explanation
The correct answer is Option C: C) To control oil and fuel fires.
Class B foam is specifically designed for flammable liquid fires (oil, fuel, grease), forming a blanket that separates the fuel from oxygen and cools the surface. This creates a vapor seal to prevent reignition. Class A foam is generally for ordinary combustibles like wood or paper.