Question : Dry powder fire extinguishers contain:
Option 1: sand
Option 2: sand and sodium carbonate
Option 3: sand and potassium carbonate
Option 4: sand and sodium bicarbonate
Correct Answer: sand and sodium bicarbonate
Solution : The correct answer is sand and sodium bicarbonate.
Fire extinguishers are used to control the fire. The main exponents of fire are fuel, oxygen, and chemical reactions, and fire extinguishers are used to eliminate the elements that are required for the fire. A mixture of sand and sodium bicarbonate is used in the dry powder fire extinguishers.
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