How fire extinguisher is useful for controlling the fire?
Dear student
A fire extinguisher is quite like a giant aerosol can often with two different substances inside. One of them is a solid, liquid or gas substance for fighting the fire. The other one is called a propellant and is a pressurized chemical that makes the fire-fighting substance come out when you press the extinguisher handle.
One of the example of fire extinguisher is as follows:
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A soda-acid type fire extinguisher contains concentrated solution of sodium hydrogen carbonate (NaHCO3) in a small cylinder fitted with a glass bottle filled with sulphuric acid. When fire breaks out, the cylinder is hit on a hard surface to break the bottle. Once the bottle breaks, the acid reacts with sodium hydrogen carbonate to evolve carbon dioxide and water in the form of vapours. Carbon dioxide, being a non-supporter of combustion, forms a blanket over the fire and extinguishes it. Water, because of its cooling effect, brings down the temperature below the ignition temperature to check burning.
In this way fire extinguisher is used for controlling fire.
Hope it is clear
Regards
A fire extinguisher is quite like a giant aerosol can often with two different substances inside. One of them is a solid, liquid or gas substance for fighting the fire. The other one is called a propellant and is a pressurized chemical that makes the fire-fighting substance come out when you press the extinguisher handle.
One of the example of fire extinguisher is as follows:
A soda-acid type fire extinguisher contains concentrated solution of sodium hydrogen carbonate (NaHCO3) in a small cylinder fitted with a glass bottle filled with sulphuric acid. When fire breaks out, the cylinder is hit on a hard surface to break the bottle. Once the bottle breaks, the acid reacts with sodium hydrogen carbonate to evolve carbon dioxide and water in the form of vapours. Carbon dioxide, being a non-supporter of combustion, forms a blanket over the fire and extinguishes it. Water, because of its cooling effect, brings down the temperature below the ignition temperature to check burning.
In this way fire extinguisher is used for controlling fire.
Hope it is clear
Regards