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Write short note on fire extinguisher

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Write short note on fire extinguisher

    • Posted by Mithun Paneer 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 5 years, 1 month ago

     

    • Soda-acid fire extinguishers contain sodium bicarbonate and sulphuric acid.
    • It is the most effective house-hold fire extinguisher.
    • It consists of a strong iron vessel with a side discharge nozzle. The iron vessel is filled with sodium bicarbonate solution.
    • A small glass bottle, filled with sulphuric acid is supported inside the iron vessel. A knob is fixed just above this bottle.
    • On striking the knob, the acid bottle breaks open into the sodium bicarbonate solution. The sulphuric acid reacts with sodium bicarbonate to form sodium sulphate, water and carbon dioxide.

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