Question 17
When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?

(a) It moves along with oxygen into the cells
(b) It comes out with the $C O_{2}$ during exhalation
(c) It is absorbed only by the nasal cells
(d) Nitrogen concentration is already more in the cells so it is not at all absorbed.

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Solution

(b) It comes out with the $C O_{2}$ during exhalation

The nitrogen inhaled during respiration is not used in the body and it comes out with $C O_{2}$ during exhalation.

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(b) It comes out with the CO2 during exhalation The nitrogen inhaled during respiration is not used in the body and it comes out with CO2 ​​​​​​ during exhalation.

(b) It comes out with the $C O_{2}$ during exhalation

The nitrogen inhaled during respiration is not used in the body and it comes out with $C O_{2}$ during exhalation.