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A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?

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Blood group B

Blood group AB

Blood group O

Blood group A

answer is C.

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Detailed Solution

Blood group ‘O’ is universal donor. It is without antigens. In blood transfusion, donor antigen and recipient antibodies are taken into consideration.

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