The percentage of oxygen and carbondioxide in inhaled air is?
A
21% and 0.04%
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B
16.4% and 4.4%
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C
2% and 4%
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D
6% and 4%
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Solution
The correct option is A 21% and 0.04% The percentage of oxygen and carbon dioxide during inhalation is 21% and 0.04% respectively. Option A is correct.