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Question

Which of the following on inhalation dissolves in blood haemoglobin more rapidly than oxygen?

A
Sulphur dioxide
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B
Ozone
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C
Carbon monoxide
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D
Nitric oxide
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Solution

The correct option is C Carbon monoxide
Carbon monoxide is a toxic, colourless and odourless gas which dissolves in blood haemoglobin rapidly, even faster than oxygen and reduces the oxygen carrying capacity of blood. Prolonged exposure to CO can lead to seizures, heart attack and even death.

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