Question 29 of 30
Foam is effective in combating which classes of fire?
A
Class A and B
B
Class B and C
C
Class C and D
D
Class A and D
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Answer & Explanation
The correct answer is Option A: Class A and B.
Foam extinguishers work by creating a smothering blanket that separates the fuel from oxygen, effectively suppressing Class A (solid combustibles) and Class B (flammable liquids) fires. It is generally not suitable for Class C (electrical) due to conductivity or Class D (metal) fires.