JEE Main Chemistry question

Not in JEE Main or NEET syllabus

With one of the pollutant gases in air, haemoglobin of blood undergoes irreversible chemical combination, thus causing death. The gas is:

(A)Carbon monoxideCorrect
(B)Carbon dioxide
(C)Sulphur dioxide
(D)Ozone

Answer: (A)

Solution

Carbon monoxide binds haemoglobin far more tightly (and essentially irreversibly under exposure conditions) than oxygen does, forming stable carboxyhaemoglobin that cannot carry oxygen,

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Question ID VK-151174