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Question

Blood leaving lungs is rich in:

A
Oxygen
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B
Haemoglobin
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C
Carbon dioxide
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D
More number of RBC
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Solution

The correct option is A Oxygen
Oxygen saturation is more in the blood coming out from the lungs to the heart and less in blood coming to lungs.
When deoxygenated blood goes to lungs by pulmonary artery, it receives oxygen from inspired air and becomes oxygenated.
The oxygenated blood is returned to the heart by pulmonary veins.
So, the correct answer is option A.

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