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Question

What product obtained on burning fossil fuels can prevent oxygen from binding with haemoglobin?


A

Water

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B

Carbon dioxide

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C

Carbon monoxide

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D

Sulphur

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Solution

The correct option is C

Carbon monoxide


Carbon monoxide, like oxygen, has an affinity for iron-containing molecules. The presence of carboxyhaemoglobin diminishes the oxygen held by the normal haemoglobin, which causes fatal.

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