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Which of the following correctly explains why carbon monoxide (CO) is dangerous when inhaled?

hard Q10 of 15
General Science - Physics (Basics)
Which of the following correctly explains why carbon monoxide (CO) is dangerous when inhaled?
ACO binds strongly with hemoglobin, reducing oxygen transport
BCO increases oxygen levels in blood causing toxicity
CCO causes inflammation of alveoli leading to asthma
DCO dissolves in plasma and neutralizes oxygen
Step-by-Step Solution
  1. Step 1: Understand carbon monoxide's effect on blood

    CO binds with hemoglobin more strongly than oxygen, forming carboxyhemoglobin.
  2. Step 2: Analyze consequences of CO binding

    This reduces oxygen transport capacity, leading to oxygen deprivation in tissues.
  3. Step 3: Eliminate incorrect options

    CO does not increase oxygen levels; it does not cause asthma; it does not neutralize oxygen in plasma.
  4. Final Answer:

    CO binds strongly with hemoglobin, reducing oxygen transport → Option A
  5. Quick Check:

    CO toxicity = Binds hemoglobin, reduces oxygen transport ✅
Quick Trick: CO poisoning blocks oxygen transport by hemoglobin.
Common Mistakes:
MISTAKES
  • Confusing CO effects with oxygen toxicity or respiratory inflammation.
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