PPSC Past Paper CARETAKER Lahore High Court 2019 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsWhich of the following discoveries in 1928 has brought great revolution in medical history?A. Vitamin C B. Aspirin C. Penicillin D. None of these 2x-10 = 20 them x-5 =?When was the Liaqut Ali Khan assassinated in Rawalpindi?