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Body Fluids and Circulations
CO is harmful to human being because
it decreases CO2 concentration
it competes O2 to combine with haemoglobin
it is carcinogenic
it depletes O2 layer
B.
it competes O2 to combine with haemoglobin
Haemoglobin forms a stable compound with CO. The affinity of haemoglobin for CO is 200 times more than for O2 so even 0.1% CO blocks 50% haemoglobin of the body due to which oxygen carrying capacity of blood is decreased. This is called hypoxia.
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