NEET PG DENTAL EXAM

Detailed explanation-1: -When we exhale, the composition of the air remains almost the same as the air we inhale, only the percentage of carbon dioxide and oxygen changes. The amount of inhaled air contains 21% of oxygen and 0.04% of carbon dioxide, while the air we breathe out contains 16.4% of oxygen and 4.4% of carbon dioxide.

Detailed explanation-2: -Exhaled air is composed of 16% oxygen, 78% nitrogen, 4% carbon dioxide, 1% of the other inert gases and it’s saturated with water vapour.

Detailed explanation-3: -Answer: The exhaled air contains more carbon dioxide because the carbon dioxide produced during respiration is removed out of the body as the exhaled air during the process of respiration.

Detailed explanation-4: -The quantity of inhaled air contains 21% oxygen and 0.04% carbon dioxide, while the air we exhale contains 16.4% of oxygen and 4.4% of carbon dioxide.