Question

pulmonary vein , vena cava , renal vein , hepatic vein. odd one out with reason​

Answer 1

plumonary vein ( transfers oxygenated blood from the lungs to heart. and others carries oxygen deplated blood towards heart.)

Answer 2

$pulmonary \: vein$

as pulmonary vein carries oxygenated blood whereas other three carries de-oxygenated blood

vena cave carries deoxygenated blood

renal vein carries deoxygenated blood from kidney to inferior vena cave

& hepatic vein carries deoxygenated blood from liver to vena cava