Oxygen binding to haemoglobin in blood is

what is incorrect about oxygen binding with haemoglobin ?

Which of the following combines with haemoglobin in blood? (a) Carbon dioxide (b) carbon monoxide (c) oxygen (d) methane

Carbon dioxide can bind to haemoglobin and reduce oxygen carrying capacity of blood.

Assertion: CO is a toxic air pollutant because. Reason: CO binds with haemoglobin of blood and reduces oxygen transport efficiency of blood.

Intake of CO by haemoglobin in blood

Percentage of oxygen supplied by haemoglobin is

Percentage of oxygen supplied by haemoglobin is