Why is carbon monoxide (CO) poisonous for man?

CO affects the nerves of the lungs.

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CO affects the diaphragm and intercostal muscles.

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CO reacts with oxygen reducing percentage of

O_{2}

in air.

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Haemoglobin combines with CO instead of

O_{2}

and the product cannot dissociate.

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Solution

The correct option is D Haemoglobin combines with CO instead of $O_{2}$ and the product cannot dissociate.
Carbon monoxide is a harmful gas that combines with haemoglobin to form a stable compound. It displaces the oxygen that is normally carried by the haemoglobin and reduces the oxygen-carrying ability of the blood. The affinity between hemoglobin and carbon monoxide is approximately 200 times greater than the affinity between hemoglobin and oxygen, so hemoglobin binds to carbon monoxide in preference to oxygen.

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Similar questions

O_{2}

C O_{2}

Carbon monoxide poisoning happens dues to the formation of __________ when carbon monoxide reacts with Hb.

C O

C O_{2}

20

O_{2}

12

2 C + O_{2} \to 2 C O

24 g

128 g

O_{2}

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