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Suspension MCQs with Answer B.Pharmacy


Topic- Suspension

Multiple choice questions

1. What is the size range of the particles of the suspension?

(a) 0.5-5mm

(b) 0.5-5nm

(c) 0.5-5μm

(d) 0.5-5cm

2. The rate of sedimentation in Flocculated and Deflocculated suspension respectively

(a) high and low

(b) low and high

(c) high and high

(d) low and low

3. For an ideal suspension, the sedimentation volume is

(a) =1

(b) <1

(c) >1

(d) 0

4. Why Chloramphenicol suspension is preferred because of

(a) high bioavailability

(b) salty taste

(c) bitter taste is masked

(d) stability improved

5. Which action is used for minimizing the sedimentation of particles?

(a) increasing viscosity

(b) reducing particles size

(c) adding sodium chloride

(d) both a & b

6. Suspending particles become flocculated in suspension, because

(a) attractive forces

(b) repulsive forces

(c) size

(d) close packing

7. Why structured vehicle is used in suspension?

(a) prevent sedimentation

(b) increase sedimentation

(c) reduce size

(d) interfacial tension

8. Which substance is used in making structured vehicle?

(a) cellulose

(b) methyl cellulose

(c) ethyl cellulose

(d) glycerine

9. Zeta potential give information about

(a) stability of suspension

(b) charge of particles

(c) size

(d) all

10. Which information is provided by wet point?

(a) concentration of surfactants used for wetting of solid

(b) wetting ability of solid

(c) wetting ability of surfactant

(d) all

11. The amount of vehicle needed to produce pourability is given by

(a) flow point

(b) triple point

(c) wet point

(d) critical point

12. Which of the following is used as suspending agent?

(a) starch
(b) methyl cellulose
(c) carbomer
(d) all

13. What is the wetting angle for complete wetting?

(a) 0°
(b) 90°
(c) 180°
(d) 360°

14. Stoke's law expresses

(a) rate of flow
(b) rate of deflocculation
(c) rate of reaction
(d) rate of sedimentation

15. What is the sedimentation volume for complete sedimentation?

(a) 1
(b) 0
(c) 0.5
(d) 0

16. All statements are true regrading suspension except

(a) contain suspending agent
(b) oral prepration
(c) injectable prepration
(d) not include preservative

17. Which is used as wetting agent in parenteral suspension?

(a) lecithin
(b) polysorbate

(c) cetrimide
(d) sodium lauryl sulfate

18. A maximum sedimentation volume will be obtained when zeta potential is

(a) negative
(b) positive
(c) neutral
(d) zero

19. Methyl cellulose is

(a) cationic polymer
(b) anionic polymer
(c) non-ionic polymer
(d) amphilytic

20. Stoke's law is applicable to

(a) deflocculated suspension
(b) flocculated suspension
(c) both a & b
(d) emulsion

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