Pharmaceutical Calculation MCQs for Pharmacy Students

1. What volume of 70% w/w solution of sucrose is required to make 600ml of 15% w/v sucrose solution?
a. 100ml
b. 107ml
c. 110ml
d. 115ml

2. What is the dose of drug for a child who has a body surface are equal to 0.57m² if have average dose of a drug is 50mg?
a. 11mg
b. 34mg
c. 8mg
d. 16mg

3. Sodium chloride solution is isotonic with blood………..
a. 0.09% w/v
b. 0.9% w/v
c. 9% w/v
d. 90% w/v

4. Patient should take 500mg STAT Amoxicilline and TDS for 7 days. In pharmacy we have only 250mg Amoxicilline tablet, How many tablets of Amoxiclline required for complete course.
a. 21
b. 42
c. 44
d. 50

5. What percentage of an originally administered intravenous dose of a drug remains in the body following three half-lives
a. 12.5 %
b. 25.5%
c. 50%
d. 75%

6. Given a 20% w/v solution of chlorhexidine gluconate, what volume is required to make 400 mL of a 2% w/v solution?
a. 40 mL
b. 20 mL
c. 80 mL
d. 2mL

7. In what proporption should alcohol of 95% and 50% strength be mixed to make 70% ?
a. 1:5
b 2:6
c. 4:5
d. 10:50

8. How many grams of hydrocortisone are in 3 g of 1.5% hydrocortisone cream?
a. 0.025g
b. 0.045g
c. 0.089g
d. None

9. How many milligrams are in a 30ml dose of solution with a concentration of 12.5mg/5ml?
a. 25mg
b. 50mg
c. 75mg
d. 100mg

10. How many grams of dextrose are required to prepare 4000 mL of a 5% solution?
a. 20g
b. 200g
c. 2000g
d. 400g

11. How many grams of a drug substance should be added to 240 mL of water to make a 4% (w/w) soultion?
a. 5g
b. 10g
c. 15g
d. 20g

12. Express 0.02% as a ratio strength.
a. 1:500
b. 2:5000
c. 1:5000
d. 5:100

13. How many grams of a drug substance should be added to 1800 mL of water to make a 10% (w/w) solution?
a. 100g
b. 200g
c. 300g
d. 500g

14. How much water should be mixed with 5000 mL of 85% v/v alcohol to make 50% v/v alcohol?
a. 2500ml
b. 5500ml
c. 8500ml
d. 9500ml

15. How many grams of zinc oxide should be added to 3200 g of 5% zinc oxide ointment to prepare an ointment containing 20% of zinc oxide?
a. 200g
b. 300g
c. 400g
d. 600g

16. How many grams of a 1:10 trituration are required to obtain 25 mg of drug?
a. 0.25g
b. 045g
c. 0.95g
d. 0.75g

17. What is the percentage of zinc oxide in an ointment prepared by mixing 200 g of 10% ointment, 50 g of 20% ointment, and 100 g of 5% ointment?
a. 5%
b. 10%
c. 20%
d. 30%

18. A hospital pharmacist wants to use three lots of zinc oxide ointment containing, respectively, 50%, 20%, and 5% of zinc oxide. In what proportion should they be mixed to prepare a 10% zinc oxide ointment?
a. 1:1:10
b. 2:2:5
c. 4:5;6
d. 9:5:6

19. If 400 mL of a 20% w/v solution were diluted to 2 liters, what would be the per- centage strength (w/v)?
a. 2%
b. 4%
c. 6%
d. 8%

20. If an antibiotic injection contains 5% w/v of the drug, how many milliliters of diluent should be added to 5 mL of the injection to prepare a concentration of 5 mg of the antibiotic per milliliter?
a. 25ml
b. 35ml
c. 45ml
d. 55ml