give a long brief on Fire extinguisher how many types of Fire extinguisher are which one is the best one
Answers
Portable fire extinguishers for home use, however, are not designed to fight large or spreading fires. Even for small fires they are useful only under certain conditions:
The operator must know how to use the extinguisher. There is no time to read directions during an emergency.
The extinguisher must be within easy reach and in working order, fully charged.
The operator must have a clear escape route that will not be blocked by fire.
The extinguisher must match the type of fire being fought. Extinguishers that contain water are unsuitable for use of grease and electrical fires.
The extinguisher must be large enough to put out the fire. Many portable extinguishers discharge completely in as few as 8 to 10 seconds.
plz mark as brainliest answer❤
Answer:
Fire extinguisher, portable or movable apparatus used to put out a small fire by directing onto it a substance that cools the burning material, deprives the flame of oxygen, or interferes with the chemical reactions occurring in the flame. Water performs two of these functions: its conversion to steam absorbs heat, and the steam displaces the air from the vicinity of the flame. Many simple fire extinguishers, therefore, are small tanks equipped with hand pumps or sources of compressed gas to propel water through a nozzle. The water may contain a wetting agent to make it more effective against fires in upholstery, an additive to produce a stable foam that acts as a barrier against oxygen, or an antifreeze. Carbon dioxide is a common propellant, brought into play by removing the locking pin of the cylinder valve containing the liquefied gas; this method has superseded the process, used in the soda-acid fire extinguisher, of generating carbon dioxide by mixing sulfuric acid with a solution of sodium bicarbonate.
There are 5 main fire extinguisher types – Water, Foam, Dry Powder, CO2 and Wet Chemical.