Question 28 of 30
Which advantage does dry chemical have over carbon dioxide (CO2) in firefighting?
A
Compatible with all foam agents
B
More protective against re-flash
C
Cleaner
D
All of the above
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Answer & Explanation
The correct answer is Option B: More protective against re-flash.
Dry chemical agents offer a greater advantage over CO2 in preventing re-flash because they form a crust on the burning material, effectively isolating it from oxygen. CO2 primarily works by diluting oxygen and cooling.