Multiple choice

CO (Carbon Monoxide) is supposed to be

  1. toxic

  2. friendly

  3. both 1 and 2

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon Monoxide (CO) is highly toxic because it binds to hemoglobin in red blood cells much more strongly than oxygen does. This prevents oxygen from being transported through the body, leading to suffocation. It is definitely not friendly and is a dangerous silent killer.

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