Question

The percentage composition of respiratory gases is given in the table.

	Oxygen	$CO_2$	Nitrogen
Inspired air	20.95	0.04	79.01
Expired air	16.4	4.0	79.6

The approximate percentage of oxygen transported by the blood during one complete circulation is

• A. $16$
• B. $18$
• C. $20$
• D. $22$

Answer 1

Answer: (C)

Correct answer is (c) $20$