Top 250+ Solved Physical Pharmaceutics 2 MCQ Questions Answer
Q. If zeta potential of a suspension is high, then the system will be considered as
a. Deflocculation
b. Flocculation
c. Emulsion
d. Sedimentation
Q. 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
Q. 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
Q. Suspension is example of
a. Biphasic liquid dosage form
b. Solid dosage form
c. Semi-solid dosage form
d. All of the above
Q. Acetates and Citrates are
a. Buffering agent
b. Colouring agents
c. Thickening agent
d. Flocculating agents
Q. In an emulsion, the velocity of sedimentation is found to be negative. It means that the creaming is:
a. absent
b. in both the directions
c. in downward direction
d. in upward direction
Q. The density of the dispersed phase is more than that of the dispersion medium. According to theStokes' equation, the creaming is:
a. at the center of the emulsion
b. in both the directions
c. in downward direction
d. in upward direction
Q. When oil and water are triturated together, the interfacial free energy was observed to be increased.What does it indicate?:
a. decrease in the interfacial tension
b. decrease in the stability
c. increase in stability
d. stable film formation
Q. For a stable emulsion, the phase volume ratio is generally about:
a. 26/74
b. 52/48
c. 74/26
d. 74/100
Q. The HLB range of an emulsifier employed in the preparation of water-in-oil emulsion is:
a. 3 to 6
b. 7 to 12
c. 13 to 15
d. more than 15
Q. In case of emulsions, the viscosity immediately after preparation and during storage, respectively, willbe:
a. higher and will gradually decrease
b. higher and gradually increase
c. lower and gradually decrease
d. lower and gradually increase
Q. The distribution of globules is not uniform in an emulsion. This stage is termed as:
a. breaking
b. caking
c. coalescence
d. creaming
Q. An o/w microemulsion is prepared using a hydrophilic surfactant. The appearance of themicroemulsion is:
a. intense white
b. milky white
c. translucent
d. tr
Q. Emulsions are defined as thermodynamically unstable systems. The events that follow sequentiallytowards instability are:
a. coalescence, breaking, creaming and flocculation
b. coalescence, flocculation, creaming and breaking
c. flocculation, creaming, breaking and coalescence
d. flocculation, creaming, coalescence and breaking