<prompt> Polyuria with low fixed specific gravity urine is seen in?Diabetes mellitusDiabetes insipidusChronic glomerulonephritisPotomania  <response>: Ans. is c i.e., Chronic glomerulonephritis o Polyuria with fixed low specific gravity is a feature of chronic glomerulonephritis.o Isosthenuria Refers to the excretion of urine whose specific gravity concentration is neither greater more concentrated nor less more dilute than that of protein-free plasma, typically 1 008-1 012. Isothenuria reflects renal tubular damagefailure of renal medullary function.o Potomonia Is known as beer drinkers hyponatremia and hypo-osmolality syndrome, related to massive consumption of beer. 