On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because

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On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because Answer: It forms carboxyhaemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen.

Question context

This question is part of ⚗️ Chemical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.