During winter season, a person sleeps in a closed room with burning firewood. He experiences nausea and giddiness. The emission of which of the following gas is responsible for it?

Stratosphere

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Carbon monoxide

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Nitrous oxide

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Sulphur dioxide

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Solution

The correct option is B Carbon monoxide
Carbon monoxide (CO) is formed due to incomplete combustion of carbon. The combining capacity of carbon monoxide with haemoglobin is comparatively larger than that of oxygen with haemoglobin. Thus, the oxygen carrying capacity of RBCs becomes low and oxygen supply to the cells are hindered causing nausea and giddiness.

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