Biology
Which one among the following statements is correct ?

All veins carry oxygenated blood
All arteries carry oxygenated blood
Except the pulmonary artery, all other arteries carry oxygenated blood
Except the pulmonary vein, all other veins carry oxygenated blood

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Biology
Normal adult human male has

24 gram of haemoglobin/100 gram of blood
10 gram of haemoglobin/100 gram of blood
14 gram of haemoglobin/100 gram of blood
18 gram of haemoglobin/100 gram of blood

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