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Respiration in Humans

The percentag...

Question

The percentage of oxygen in the exhaled air is ______.

A

16

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B

18

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C

12

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D

21

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Solution

The correct option is A 16

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The percentage of carbon dioxide in exhaled air is ___________.

Q. What is the percentage of oxygen in inhaled and exhaled air? [2 MARKS]

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Q. Which row in the table shows the correct percentage of oxygen in atmospheric and exhalend air ?

	Atmospheric air / %	Exhaled air /%
A	78	21
B	21	16
C	16	4
D	4	0.04

What is the percentage of carbon dioxide in exhaled air?

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