`CO_(2)` concentration isÂ A. More in expired air than in alveolar a – InterviewSolution

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1.	`CO_(2)` concentration isÂ A. More in expired air than in alveolar airB. More in alveolar air than in expired airC. More in inspired air than in alveolar airD. More in inspired air than in expired air
Answer» Correct Answer - B The percentage of `O_(2)` in inspired air is 21 % (20.9%) while in expired air it is 1600. `CO_(2)` content in atmosphere is 0.04% while in expired air it is 4.5%. In alveolar air, `CO_(2) is 6% O_(2) is 14%" and "N_(2)` is 80%.

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