The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen by (appro.)

Question

Accepted Answer

200 times. D is correct because carbon monoxide has an affinity for hemoglobin about 200 times greater than oxygen. A is incorrect because the ratio is significantly higher than 20 times. B is incorrect because the known value is not 100 times. C is incorrect because the affinity is much greater than just 2 times.