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  • Which of the following gases is the most dangerous when i...
Multiple choice

Which of the following gases is the most dangerous when inhaled?

  1. Carbon dioxide

  2. Nitrogen

  3. Oxygen

  4. Carbon monoxide

  5. Methane

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

Carbon monoxide is the most dangerous when inhaled as it can be deadly.

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