Reduction in $pH$ of blood will

Identify the correct group of statements:
$I.$ Oxygen is carried by haemoglobin
$II.$ Oxygen is carried by carbonic anhydrase
$III.$ $CO_{2}$ is carried by haemoglobin
$IV.$ $SO_{2}$ is carried by haemoglobin
$V.$ Only oxygen is transported by the blood
$VI.$ Only $CO_{2}$ is transported by the blood
Choose the correct option.

Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?

Which of the following factors is favourable for the formation of oxyhaemoglobin in the alveoli of human lungs?

Carbon dioxide is transported via blood to lungs mostly in which form?

Carbon dioxide is transported via blood to the lungs primarily in which form?