PHARMACEUTICS MCQ AND NPC EXAM DAILY SERIES 29

 NPC MCQ  DAILY PRACTICE

[PHARMACEUTICS]

1. How surfactants will facilitate or aid wetting of hydrophobic materials in liquid

A. By decreasing the solid-liquid interfacial tension

B. By increasing the solid-liquid interfacial tension

C. Both

D. None

Ans. A

2. The stability of suspensions can be evaluated by

A. Sedimentation volume

B. Degree of flocculation

C. Re-dispersibility

D. All

Ans. D

3. To identify the emulsion type, which of the following tests are conducted?

A. Dilution test

B. Dye test

C. Conductivity test

D. All

Ans. D

4. Stoke’s equation is expressed as 

A. V = 2r^2(d1–d2)g/18η

B. V = 2r^2 (d1–d2)g/9η 

C. Both 

D. None

Ans. B

5. The temperature at which the inversion occurs depends on emulsifier concentration is known  as

A. Phage temperature

B. Inversion temperature

C. Phase inversion temperature

D. All

Ans. D

6. Which of the following mechanical equipment can be used for emulsification?

A. Homogenizers

B. Mechanical stirrers

C. Ultrasonifiers

D. All

Ans. D

7. Which of the following is not used as a emulsifying agent?

A. Surfactant

B. Hydrophilic colloids

C. Electrolytes

D. Finely divided solids

Ans. C

8. HLB system was developed by

A. Griffin

B. Stock’s

C. Dalla Valle

D. None

Ans. A

9. Gum Arabic is a

A. Anionic polysaccharide

B. Cationic polysaccharide

C. Neutral polysaccharide

D. None

Ans. C

10. Which of the following is not a semisolid dosage form 

A. Paste

B. Creams 

C. Ointments

D. Suspensions

Ans. D

11. Generally pastes contain 

A. High percentage of insoluble solids

B. Low percentage of insoluble solids 

C. Both 

D. None

Ans. A

12. Most widely used hydrocarbon in semisolid dosage forms

A. Petrolatum

B. Mineral oil 

C. Both

D. None

Ans. C

13. Which of the following hydrocarbon waxes are employed in the manufacture of creams and ointments? 

A. Paraffin wax

B. Ceresin 

C. Both

D. None

Ans. C

14. Which of the following is not a vegetable oil 

A. Peanut oil

B. Almond oil 

C. Olive oil

D. Petrolatum

Ans. D

15. Which of the following fatty acid used in water removable creams as emulsifier?

A. Palmitic acid 

B. Stearic acid

C. Both

D. None

Ans. B

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