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Combustion and Flame — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame1 Mark
MCQ
What is the principle of soda fire extinguisher?
  • ✓
    Carbon dioxide produced cuts off the supply of oxygen by covering the fire like a blanket.
  • B
    Water produced cuts off the supply of oxygen by covering the fire.
  • C
    Acid present in the container reacts with fire.
  • D
    Nitrogen gas produced cuts off the supply of oxygen by covering the fire.
✓

Answer

Correct option: A.
Carbon dioxide produced cuts off the supply of oxygen by covering the fire like a blanket.

Carbon dioxide being heavier than oxygen, covers the fire like a blanket. Since the contact between the fuel and oxygen is cut off, the fire is controlled.

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