Exercise # 12

PRACTICE QUESTIONS

Exercise # 12

Q1. The formula 0.152*t_1/2 (0.105/k) is used for

a. Determining half life after 15% of time

b. For determining shelf life

c. For calculating Concentration after 15 minutes

d. None of the above

Q2. Which of the following modes of degradation is most common with pharmaceuticals?

a. Oxidation

b. Hydrolysis

c. Photolysis

d. All are equally common.

Q3. Purified water USP should not contain more than how many PPM of total solids?

a. 1

b. 5

c. 10

d. 100

Q4. Bacteriostatic water for injection containers should not exceed what quantity?

a. 30 ml

b. 50 ml

c. 100 ml

d. 80 ml

Q5. Which of the following are not true of Syrup NF ( simple syrup)?

a. It has 85% sugar

b. It is self preserving, doesn’t need preservative.

c. Sugar is an excellent medium for organism, so preservative is required.

d. It is a concentrated or nearly saturated solution

Q6. Aromatic Elixir NF contains what % of alcohol?

a. 8 to 10 %

b. 22%

c. 73 to 78%

d. 5 to 40%

Q7. The larger the HLB value,

a. More Hydrophilic the molecule

b. More hydrophobic the molecule

c. Both the above

d. None of the above

Q8. Sodium lauryl sulphate is

a. Anionic surfactant

b. Forms o/w emulsion

c. Has a HLB value of 40

d. All the above

Q9. wetting agents have a HLB of

a. 0 – 3(Antifoaming)

b. 4 – 6 (W/O)

c. 7 – 9 (Wetting)

d. 10 – 18 (Solubilizing agent)

Q10. Oleaginous bases are

       a. Petrolatum

b. Glyceryl monostearate

c. isopropyl myristate

d. lanolin oil

e. all the above

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