The maximum affinity of haemoglobin is with

Carbon monoxide

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Carbon dioxide

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Oxygen

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Ammonia

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Solution

The correct option is A
Carbon monoxide

Affinity of haemoglobin towards carbon monoxide is approximately 230 times greater than that for oxygen. Thus it can easily displace oxygen in the blood and can prove to be fatal.

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Similar questions

For which of the following gas, Haemoglobin has the maximum affinity?

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