Soda acid fire extinguishers contains sulphuric acid and:
calcium carbonate
sodium bicarbonate and sodium carbonate
sodium bicarbonate
sodium carbonate
A
sodium bicarbonate and sodium carbonate
B
sodium carbonate
C
sodium bicarbonate
D
calcium carbonate
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Solution
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Soda acid fire extinguishers contain sulphuric acid and sodium bicarbonate. Both of these chemicals are present in two different sealed flasks inside the extinguisher. In case of emergency, the seal is broken, and sulphuric acid and sodium bicarbonate react instantly to give CO2. The CO2 gas released put off the fire. Hence the correct option is B.
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