McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Pharmacy (B. Pharma) , Pharmacy .
Chapters
| 1. |
A wetting agent is included in the formulation of a suspension, particularly when the suspended particles: |
| A. | are hydrophobic |
| B. | are more denser than the vehicle |
| C. | are water soluble |
| D. | have lesser interfacial tension |
| Answer» A. are hydrophobic | |
| 2. |
For a flocculated suspension, one of the following criterion is satisfied or established |
| A. | High inter-particle repulsions |
| B. | strong inter-particle attractions |
| C. | weak inter-particle attractions |
| D. | weak inter-particle repulsions |
| Answer» C. weak inter-particle attractions | |
| 3. |
In stokes’ relationship, a parameter that greatly changes the velocity of settling is: |
| A. | density of the liquid |
| B. | density of particle |
| C. | radius of the particle |
| D. | viscosity of the medium |
| Answer» C. radius of the particle | |
| 4. |
The protamine-zinc insulin suspension is prepared by a method viz.,: |
| A. | altered pH precipitation |
| B. | dispersion method |
| C. | double decomposition |
| D. | organic solvent precipitation |
| Answer» A. altered pH precipitation | |
| 5. |
Methyl cellulose is a polymer, which is of a type: |
| A. | anionic |
| B. | amphilytic |
| C. | cationic |
| D. | non-ionic |
| Answer» D. non-ionic | |
| 6. |
For a flocculated suspension the degree of flocculation is observed to be one. The sedimentation volume is also 1 (one). These values, respectively, indicate the limits: |
| A. | lower and lower |
| B. | lower and upper |
| C. | upper and lower |
| D. | upper and upper |
| Answer» B. lower and upper | |
| 7. |
For an ideal suspension, the sedimentation volume should be: |
| A. | equal to one |
| B. | less than one |
| C. | more than one |
| D. | zero |
| Answer» A. equal to one | |
| 8. |
In case of suspensions, all statements below are true EXCEPT that: |
| A. | it contains a suspending agent |
| B. | it does not include a preservative |
| C. | it is an injectable preparation |
| D. | it is an oral preparation |
| Answer» B. it does not include a preservative | |
| 9. |
In practice, an acceptable suspension should have particles: |
| A. | of nearly 0.1 micrometer |
| B. | which can be readily re-dispersible after they settle |
| C. | which should form a cake after settling |
| D. | should not settle |
| Answer» B. which can be readily re-dispersible after they settle | |
| 10. |
For oral administration of a suspension to a patient, which one of the factors is the most important? |
| A. | acceptable color and odour |
| B. | polyumorphism |
| C. | specific surface area |
| D. | viscosity |
| Answer» A. acceptable color and odour | |
| 11. |
Which one of the following properties is applicable to suspensions? |
| A. | Brownian movement |
| B. | laminar flow |
| C. | rapid rate of sedimentation |
| D. | strokes’ law |
| Answer» C. rapid rate of sedimentation | |
| 12. |
Suspended particles become flocculated in a suspension, because: |
| A. | attractive forces between particles are appreciable |
| B. | particles are packed closely |
| C. | repulsive forces between particles are appreciable |
| D. | vehicle rejects the particles |
| Answer» A. attractive forces between particles are appreciable | |
| 13. |
Structured vehicle is included in the formulation of a suspension, in order to: |
| A. | decrease the interfacial tension |
| B. | prevent the caking of the sediment |
| C. | prevent the sedimentation of particles |
| D. | reduce the size by chemical me |
| Answer» A. decrease the interfacial tension | |
| 14. |
In the preparation of a structured vehicle, which one of the following substances is used? |
| A. | bismuth subnitrate |
| B. | ethyl alcohol |
| C. | glycerin |
| D. | methyl cellulose |
| Answer» D. methyl cellulose | |
| 15. |
Which type of colloidal material is used commonly in the preparation of a structured vehicle? |
| A. | association |
| B. | hydrophilic |
| C. | hydrophobic |
| D. | inorganic |
| Answer» B. hydrophilic | |
| 16. |
When charcoal powder is dusted on the surface of water, the contact angle (in degrees) that the charcoal exhibits is: |
| A. | zero |
| B. | one |
| C. | 90 |
| D. | 180 |
| Answer» D. 180 | |
| 17. |
A maximum sedimentation volume will be obtained when zeta potential is: |
| A. | negative |
| B. | neutral |
| C. | positive |
| D. | zero |
| Answer» D. zero | |
| 18. |
A substance is dissolved in water. The suspension has exhibited a negative apparent zeta potential. Identify the related substance. |
| A. | aluminum chloride |
| B. | bismuth subnitrate |
| C. | gelatin |
| D. | sulfaguanidine |
| Answer» D. sulfaguanidine | |
| 19. |
Calcium hydrogen phosphate is dissolved in water. The apparent zeta potential initially is: |
| A. | negative |
| B. | neutral |
| C. | positive |
| D. | zero |
| Answer» A. negative | |
| 20. |
Which one of these preparations is NOT qualified as a suspension. |
| A. | barium meal for radiodiagnostic use |
| B. | calamine lotion for antiseptic use |
| C. | procaine penicillin G for intramuscular injection |
| D. | vitamin B complex tonic as nutritional supplement |
| Answer» D. vitamin B complex tonic as nutritional supplement | |
| 21. |
The ratio of the ultimate volume of sediment to the actual volume of sediment before settling is called |
| A. | Sedimentation volume |
| B. | Degree of flocculation |
| C. | Emulsification volume |
| D. | phase volume ratio |
| Answer» A. Sedimentation volume | |
| 22. |
The ratio of the sedimentation volume in case of flocculated suspension to the sedimentation volume in case of deflocculated suspension is called |
| A. | Sedimentation volume |
| B. | Degree of flocculation |
| C. | Emulsification volume |
| D. | phase volume ratio |
| Answer» B. Degree of flocculation | |
| 23. |
The size of dispersed particles in coarse dispersion ranges from |
| A. | 1 µm to 100 µm. |
| B. | 1 nm to l00nm |
| C. | 1mm to 100cm |
| D. | Less than 1 µm |
| Answer» A. 1 µm to 100 µm. | |
| 24. |
Which of the following are the desired features of good suspension: |
| A. | The particles which settle down should not deposit at the bottom as hard cake. They must be easily re-suspended by moderate shaking. |
| B. | It should be free from grittiness. |
| C. | It should be stable in case of physical, chemical and microbial attack. |
| D. | All of the above |
| Answer» D. All of the above | |
| 25. |
In flocculated suspension, the rate of sedimentation is |
| A. | Low |
| B. | More |
| C. | Zero |
| D. | 50% |
| Answer» B. More | |
| 26. |
If zeta potential of a suspension is high, then the system will be considered as |
| A. | Deflocculation |
| B. | Flocculation |
| C. | Emulsion |
| D. | Sedimentation |
| Answer» A. Deflocculation | |
| 27. |
Which of the following is/are the properties of flocculated suspension? |
| A. | Rate of sedimentation is high |
| B. | On shaking sediment can be easily redispersed |
| C. | It does not form hard cake |
| D. | All of the above |
| Answer» D. All of the above | |
| 28. |
The value of sedimentation volume (F) gives a knowledge about the____________of the suspension |
| A. | physical stability |
| B. | Incompatibility |
| C. | Solubility |
| D. | All of the above |
| Answer» A. physical stability | |
| 29. |
Suspension is example of |
| A. | Biphasic liquid dosage form |
| B. | Solid dosage form |
| C. | Semi-solid dosage form |
| D. | All of the above |
| Answer» A. Biphasic liquid dosage form | |
| 30. |
Acetates and Citrates are |
| A. | Buffering agent |
| B. | Colouring agents |
| C. | Thickening agent |
| D. | Flocculating agents |
| Answer» A. Buffering agent | |
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