What is the clearance of a substance, if its concentration in plasma is 10 mg%, concentration in urine is 100 mg % and urine flow is 2 ml/min ?: (A) 0.02 ml/min., (B) 0.2 ml/min, (C) 2 ml/min, (D) 20 ml/min.
Answer is D. Ans. is 'd' i.e., 20 ml/min.