Maximum CO2 is seen in ?
Ans. is 'b' i.e., Pulmonary aeryPulmonary aeries carry deoxygenated blood (with maximum CO2) to lung from right ventricle.In lung CO2 is removed and oxygenation of blood takes place.Pulmonary veins, then, transpo this oxygenated blood (with less CO2) to the left atrium.
Pulmonary vein
Pulmonary aery
Left ventricle
Left atrium