Why are washing soda and Sulphuric acid used in fire extinguishing machine? ![]() But water is heavier than oil and settles down below the oil particles and oil keeps on burning on the top. Soda-acid fire extinguisher is not successful in controlling fire due to oils because it uses water to cool the combustible substance. Why soda acid extinguisher Cannot be used for fighting electrical fires? The carbon dioxide is liberated by the action of acid on baking soda. ![]() It acts on all types of fire except due to electrical and inflammable liquids. ![]() Soda acid type extinguisher acts by cutting off supply of air.
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