Which of the following air pollutants reduce the oxygen-carrying capacity of blood?

Carbon dioxide

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Carbon monoxide

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Sulphur dioxide

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Nitrous oxide

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Solution

The correct option is B Carbon monoxide
$C O$ has higher affinity to haemoglobin as compared to oxygen. Carbon monoxide combines with haemoglobin to form carboxyhaemoglobin. This prevents oxygen binding to haemoglobin, thereby reducing the oxygen-carrying capacity of the blood, leading to hypoxia.

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Similar questions

Which of the following air pollutant reduces the oxygen-carrying capacity of blood to a large extent?

(a) carbon dioxide

(b) nitrogen monoxide

(d) sulphur dioxide

Oxygen-carrying capacity of human blood is reduced due to the pollution of

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