You may have seen red bottles hanging on the wall in public places like hospitals, theaters, railway stations. These bottles are useful in extinguishing fires. It can be used immediately when there is a sudden fire in large complexes. This device is called a fire extinguisher or fire extinguisher. There is also a note on the wall on how to use it. This bottle can be easily used by anyone. Its design is simple and straightforward.
The cylinder of the fire extinguisher is filled with a solution of sodium bicarbonate. A small glass vial on top of it contains sulfuric acid. When used, the bottle is turned upside down and its top valve is knocked to the ground. Carbon dioxide erupts at high speed and extinguishes the fire.
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