Which is called Hamburger shift?

$A$ large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This $O_2$

Which factor in tissues favours the formation of $HCO_{3}^{-}$ and $H^{+}$ ions in the blood?

The following statements refer to the transportation of gases. Read them carefully and choose the correct option containing the incorrect statements.
$(i)$ After leaving the lungs, each litre of blood contains about $20 \ ml$ of oxygen.
$(ii)$ When $PCO_2$ rises, the affinity of haemoglobin for oxygen is increased.
$(iii)$ Each litre of arterial blood contains about $4 \ ml$ of $CO_2$.
$(iv)$ The role of oxygen in the regulation of respiratory rhythm is quite significant.

Under normal physiological conditions,every $100 \,mL$ of oxygenated blood delivers approximately ......... $mL$ of $O_2$ to the tissues.

Identify the wrong statement with reference to transport of oxygen.