GK
BASIC GENERAL KNOWLEDGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The exhaled air contains
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a mixture of carbon dioxide and nitrogen
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carbon dioxide only
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a mixture of carbon dioxide, nitrogen and oxygen in which nitrogen has the highest percentage
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a mixture which has more carbon dioxide than oxygen
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Explanation:
Detailed explanation-1: -nitrogen – 78% oxygen – 17% carbon dioxide – 4% other gases – 1%.
Detailed explanation-2: -Atmospheric air is rich in nitrogen which is about 78%. Oxygen constitutes 20% of the atmospheric air. Therefore the inhaled air consists of 20% of oxygen.
Detailed explanation-3: -Inhaled air contains approx 21%oxygen, 0.04% carbon dioxide and 79%nitrogen while exhaled air contains approx 16% oxygen, 4% carbon dioxide and also 79% nitrogen.
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