Q

Which of the following substances is not selectively reabsorbed when urine flows through the tubule?

RRB Technicians Grade-III 30/12/2024 (Shift-II) 2024
✓ Answer: D Urea
The source answer is urea, a nitrogenous waste. Glucose, amino acids and needed salts are selectively reabsorbed. Urea is also partly reabsorbed and recycled, so the wording is a simplification.