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SSC GD CONSTABLESSC GD CONSTABLE Hard Mock Set 4Hard GK

SSC GD CONSTABLE Mock Test Set 4, 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: SSC GD CONSTABLE. Set: 4.
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