Q. Haemoglobin of the human blood forms a stable complex compound with which of the following gas leading to death?
A) Oxygen
B) Carbon dioxide
C) Carbon monoxide
D) Nitrogen
Explanation
98.5% of $O_{2}$ is transported by blood with the help of haemoglobin. The molecule of haemoglobin has 250 times more affinity with CO as compare to $O_{2}$ and thus, prevent $O_{2}$ transport which leads to death.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.