Answer :

Final answer:

Class Alpha fires are extinguished with water or dry chemical extinguishers. Fluorinated solutions spread across the surface and extinguish the fire, creating a barrier between the material and the air.

Explanation:

Class Alpha fires, which involve ordinary combustibles such as wood, paper, cloth, trash, and plastics, are best extinguished using water or certain types of dry chemical extinguishers. These materials need a fire-fighting agent that can lower the temperature of the material and remove the heating element of the fire triangle.

Agents such as fluorinated solutions are able to spread across the burning surface and extinguish the fire. Foams, especially those that form a barrier between the burning material and the air, are used to fight large-scale fires of organic liquids.

Previously, dry-cleaning solvent and fire extinguishers were used for these purposes, but they are no longer recommended. Now, more advanced fire extinguisher systems are deployed, which might include foaming agents that prevent re-ignition by forming a barrier. It's also important to note that special materials, such as Nomex, are used as part of personal protective equipment for firefighters to protect them during fire suppression activities.

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Rewritten by : Barada