Multiple choice

The gas used to extinguish fire is

  1. neon

  2. nitrogen

  3. carbon dioxide

  4. carbon monoxide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon dioxide is the primary gas used in fire extinguishers because it displaces oxygen and does not support combustion, effectively smothering fires. It's particularly useful for electrical fires as it's non-conductive. Carbon monoxide is toxic and would be dangerous, while neon and nitrogen are not effective fire suppressants in standard applications.

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