Q- What is the pKa of a drug?
A- The pH at which 100% drug becomes completely ionized
B- The pH at which 100% drug becomes completely unionized
C- The pH at which 50% of the drug is ionized and 50% unionized
Q- Which one of the following substances is used to acidify the urine?
B- Ammonium chloride
C- Sodium bicarbonate
Q- Which of the following substances increases absorption of iron in the intestine?
A- Ascorbic acid
C- Folic acid