How do carbon dioxide fire extinguishers work to put out flames?
ABy displacing the oxygen surrounding the fire, cutting off its fuel supply
BBy adding more fuel to burn the fire out quickly
CBy cooling the fire with extremely cold water
DBy chemically converting the fire into smoke
Explanation
Carbon dioxide fire extinguishers work primarily by displacing the oxygen in the immediate area around a fire, since combustion requires oxygen to continue, effectively smothering the flames. Carbon dioxide is also considerably colder than the surrounding air when it’s rapidly released from a pressurized extinguisher, providing some additional cooling effect. This type of extinguisher is particularly well suited for electrical fires, since carbon dioxide does not conduct electricity and leaves no residue behind on sensitive equipment. Explore more Everyday Science MCQs on mcqstutor to keep practicing.
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