<prompt> Plasma urea creatinine ratio of 20:1 may be seen in :RhabdomyolysisUreteric calculiPre-renal failureChronic Glomerulonephritis  <response>: Answer is c Pre-renal failure Plasmaurea creatinine ratio of 20:1 is characteristic of prerenal ARF Rhabdomyolysis and chronic glomerulonephritis are causes of Intrinsic ARF and are associated with a plasma urea creatinine ratio of 10-15. Ureteric calculi are associated with post-renal ARF 