Question

What is fire extinguisher. What is the principal behind it???
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Answer 1

Answer:

Water extinguishers work by removing heat from the fire. Dry chemical extinguishers are tanks of foam or dry powder with compressed nitrogen as the propellant. They work by smothering the fire: when you put a layer of powder or foam on the fire, you cut the fuel off from the oxygen around it, and the fire goes out.

Answer 2

Answer:

Fire extinguisher contains dry carbon dioxide which cover the fire and prevent oxygen from reaching it and we know without oxygen, fire can't be carried out. This is the basic principle on which fire extinguishers are built that help to extinguish a fire.