Question 1 of 30
The extinguishing agent most likely to allow re-ignition of a fire is:
A
Mechanical foam spray
B
Carbon dioxide
C
Water fog
D
Dry chemical powder
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Answer & Explanation
The correct answer is Option B: Carbon dioxide.
Carbon dioxide (CO2) extinguishes fire by displacing oxygen. However, it has minimal cooling effect, meaning that if the fuel remains hot enough, it can re-ignite once the CO2 dissipates and oxygen is reintroduced.