Daily Pharmacy Quiz

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Daily Pharmacy Quiz

No of MCQ:20, Organized By ThePharmapedia.com
Topic: Emulsion

Name of Candidate *

Mobile No. (Optional)

1. Which one is a example of multiple emulsion

1 point

w/o/o

o/w/w

o/w/o

o/o/w

Clear selection

2. Creaming in oil in water emulsion normally

1 point

Upward

Downward

First upward and downward

None of these

Clear selection

3. Microemulsion contains globules of the size

1 point

10 μm

1 μm

0.1 μm

0.01 μm

Clear selection

4. On a commercial scale the emulsion is prepared by

1 point

Freezing

Homogenization

Centrifugation

Dialysis

Clear selection

5. Ideal emulsifying agent should be soluble in

1 point

Aqueous phase

Oily phase

Both a and b

Insoluble in both phase

Clear selection

6. In the stability of emulsion which one critically important steps should be prevented

1 point

Flocculation

Breaking

Creaming

Coalescence

Clear selection

7. Tweens are used to prepare the

1 point

W/O

O/W

Clear

unstable

Clear selection

8. The HLB system is used to a classification of

1 point

Colouring Agent

Surfactants

BCS of drug

Perfumes

Clear selection

9. Emulsion having more than two phases are called as

1 point

Mixed emulsion

Multiple emulsion

Emulsion within Emulsion

Complex emulsion

Both b & c

Clear selection

10. An emulsion is

1 point

Biphasic system

Monophasic system

Thermodynamically unstable system

Thermodynamically stable system

Both a & c

Both b & c

Clear selection

11. Shelf life of emulsion is

1 point

Short

Longer

None

Clear selection

12. Creaming is a

1 point

Reversible process

Irreversible process

Both a and b

None

Clear selection

13. Density of oil phase increased by addition of

1 point

Coconut oil

Butter

Water

Volatile oil

Clear selection

14. At CMC, micelles of the surfactant molecules assume the shape of

1 point

Rod shaped

Spherical

Layered

Conical shape

Clear selection

15. Which one of the emulsion agent is used to stabilize w/o Which one of the emulsion agent is used to stabilize w/o emulsion

1 point

SLS

Span 20

Tween 20

Tragacanth

Acasia

Clear selection

16. Natural emulsifying agents promotes o/w emulsion formation

1 point

Lanolin

Lecithin

Wool fat

Beewax

Clear selection

17. True statement about the test of emulsion type

1 point

A w/o emulsion can be diluted with water without phase separation

o/w emulsion will show a dotted color pattern if water soluble dye is added

o/w emulsion shows electrical conductance

o/w dotted fluorescent pattern

Clear selection

18. An Emulsion is a system of two ____ liquid phases one of phase is dispersed as fine globules throughout the other continuous phase

1 point

Miscible

Polar

Immiscible

Non-polar

Clear selection

19. HLB system, wetting agents having HLB value between

1 point

10-18

7-9

4-6

1-3

Clear selection

20. Particle increasing in size

1 point

Solution, suspension, colloid

Suspension, colloid, solution

Solution, colloid, suspension

Colloid, solution, suspension

Clear selection

21. Hydrophobic means

1 point

Water fearing

Water loving

Water

Oil

Clear selection

22. Hydrophilic means

1 point

Water fearing

Water loving

Oil

Water

Clear selection

23. How does an emulsifier works

1 point

By decreasing the interfacial tension

By preventing coalescences of dispersed globules

Both a and b

None of these

Clear selection

24. Medically emulsion administered orally are usually

1 point

O/W

W/O

Fine emulsion

Micro emulsion

Clear selection

25. During conduction test for identification of an emulsion, electric circuit completes when continuous phase is

1 point

Water

Oils

Coconut oil

Theobroma oil

Clear selection

26. Appearance of microemulsion

1 point

Transparent

Milky

Red spotted

Blue spotted

Clear selection

27. Very fine emulsion is prepared by

1 point

Colloidal mill

Hammer mill

Silverson mixer homogenizer

None of these

Clear selection

28. If surfactant have HLB value 4. Which type of emulsion can be prepared using this surfactant

1 point

O/W

W/O

BOTH

NONE

Clear selection

29. Bancroft rules describe

1 point

Relationship the nature of emulsifying agent and type of emulsion formed

Surfactant is more soluble in water-O/W emulsion

Surfactant is more soluble in oil-W/O emulsion

All of these

Clear selection

30. ‘H’ Surfactants having HLB value 3-6, favours the formation of

1 point

O/W

W/O

Fine emulsion

Micro emulsion

Clear selection

31. Surfactant with HLB value 8-16 favours

1 point

O/W

W/O

Fine emulsion

Micro emulsion

Clear selection

32. HLB states

1 point

Hydrophobic lipophilic balance

Hydrophilic-lipophilic balance

Hydrophilic lipophilic balance

Henson Lanson balance

Clear selection

33. HLB term given by

1 point

Sorension

Griffin

CLC

SSJ

Clear selection

34. Flocculation of globules in emulsion can be prevented by

1 point

Using uniform sized globules

Imparting charged on global

By adding inert substance

Both a and b

Clear selection

35. Breaking / Cracking of emulsion is

1 point

Reversible process

Irreversible process

Phase inversion

Coalenscemce

Clear selection

36.True about fine emulsion

1 point

Globules size -0.01μm

Globules size – 0.25 - 25 μm

Appearant – milky

Appearant – Transparent

Both b & c

Clear selection

37. Multiple emulsion of w/o/w. Which one is a continuous phase

1 point

Oil

Water

o/w

w/o

Clear selection

38. Water & oil soluble dye respectively

1 point

Methylene blue & Amaranthus

Sudan III & methylene blue

Methylene blue & Scarlet red

Scarlet Red & Sudan III

Clear selection

39. For the preparation of emulsion using volatile oil, what will be the oil: water: gum ratio

1 point

2 : 2 : 1

3 : 2 : 1

2 : 3 : 1

4 : 2 : 1

Clear selection

40. Phase inversion of emulsion can be obtained by which method

1 point

Change of emulsion type from o/w to w/o

Change of emulsion type from w/o to o/w

Complete separation of Aq. & oil phases

Both a and b

Clear selection

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