What is the total osmolarity of low osmolarity ORS?: (A) 311 mmol/ litre, (B) 300 mmol/ litre, (C) 245 mmol/ litre, (D) 250 mmol/ litre
Answer is C. Composition of reduced osmolarity ORS: Components Amount in mmol/ litre Sodium 75 Chloride 65 Glucose, anhydrous 75 Potassium 20 Citrate 10 Total osmolarity 245 Ref: Park 21st edition, page 202.