McqMate
| Q. |
In case of emulsions, the viscosity immediately after preparation and during storage, respectively, will be: |
| A. | higher and will gradually decrease |
| B. | higher and gradually increase |
| C. | lower and gradually decrease |
| D. | lower and gradually increase |
| Answer» C. lower and gradually decrease | |
983
0
Do you find this helpful?
3
View all MCQs in
Physical Pharmaceutics 2Discussion
Rahul maurya
2 months ago
Correct answer is A because viscosity is directly proportional to the surface area during or immediately after preparation; globule size is less (meaning high surface area) during storage due to flocculation and coalescence. Size may increase (surface area decreases) as a result; viscosity decreases.
0
Related MCQs
- In the formulation development of emulsions and suspensions, what type of diameter is important?
- In general, Newtonian fluids are expressed in terms of viscosity. A corresponding expression in nonNewtonian fluids (in terms of viscosity) is:
- Kinematic viscosity is the ratio of dynamic viscosity to the____________
- Emulsions are defined as thermodynamically unstable systems. The events that follow sequentially towards instability are:
- On commercial scale, emulsions are prepared by::
- O/W emulsions normally cream .........
- Emulsions made with tweens are
- During storage, crystal growth is observed in a suspension due to:
- Which quality of the dispersed phase is responsible for the increased viscosity of a hydrophilic colloidal dispersion?
- High viscosity indicates one of the following relationships in a system. Which is relevant?