Multiple choice

Which of the following is the best fire extinguisher?

  1. Water

  2. Carbon dioxide

  3. Woollen cloth

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is the best fire extinguisher among these options because it's heavier than air, forms a blanket that displaces oxygen, and doesn't conduct electricity (safe for electrical fires). Water can spread grease fires and conducts electricity. Woollen cloth can smother small fires but is not as effective or versatile as CO2 for general firefighting.

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