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UP POLICE CONSTABLEUP POLICE CONSTABLE Hard Mock Set 1Hard GK

UP POLICE CONSTABLE Mock Test Set 1, Q89: Identify the correct answer for universal donor blood group in basic ABO-Rh system.

A. B negative
B. O negative
C. AB positive
D. A positive
Correct Answer: B. O negative
Explanation: O negative is commonly called universal donor. Category: UP POLICE CONSTABLE. Set: 1.
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