Question

Give the composition of inhaled and exhaled air

Answer 1

The exhaled Air contains $\textbf{carbon dioxide }$ and$\textbf{ water vapour }$.

$\textbf{Inhaled Air }$:

Oxygen : 21%
Carbon dioxide : 0.03%

$\textbf{Exhaled Air }$:

Oxygen : 16.4%
Carbon dioxide : 4.4%

Answer 2

Inhaled air contains all the constituents of air including dust particles.(the dust particles are prevented from going in by the mucus in the nose)
Exhaled air contains a much lesser oxygen content in it and the oxygen required for our body is taken by the lungs.