Q. 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 ?
A) Blood group A
B) Blood group B
C) Blood group AB
D) Blood group O
Explanation
[Solution from source] Blood group O has no A or B antigens on its RBCs, so it can be given to a patient of any ABO group; O is the universal donor. Group AB is the universal recipient, not donor. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.