. CO is more toxic than


CO is more toxic than CO2 because

(a)           it affects the nervous system.

(b)          it forms acid with water.

(c)           it damages lungs.

(d)          it reduces the oxygen carrying capacity of haemoglobin.

Best Answer

(d)    it reduces the oxygen carrying capacity of haemoglobin.

Haemoglobin binding affinity for CO is 200 times greater than its affinity for oxygen  meaning that small amounts of CO dramatically, reduces haemoglobin's ability to transport oxygen.

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