The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin

The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen approximately by

(a) 2 times
(b) 20 times
(c) 250 times
(d) 1000 times

250 times

The affinity of haemoglobin for CO is approximately 210 times greater than O₂.

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