What is the difference between vanishing cream and cold cream?
a. Both are examples of oil-in-water emulsions
b. Vanishing cream is an oil-in-water emulsion whereas cold cream is a water-in-oil emulsion
c. Vanishing cream is a water-in-oil emulsion whereas cold cream is an oil-in-water emulsion
d. Both are examples of water-in-oil emulsions

Which of the following is not a method to test the type of emulsion?
a. Microscopic method
b. Conductance method
c. Coagulation method
d. Dye method

Which of the following statements regarding emulsions is false?
a. Emulsions cannot be separated into their constituent liquids
b. Emulsions show Brownian motion
c. Emulsions show Tyndall effect
d. Emulsions exhibit properties like Electrophoresis and Coagulation

What is the dispersion of a liquid in another liquid called?
a. Gel
b. Foam
c. Emulsion
d. Aerosol

The particle size in suspension is
a. less than 10³ nm
b. 10² nm
c. Greater than 10³
d. 10 nm

Creaming is?
a. Reversible
b. Irreversible
c. Both
d. Difficult to predict

Upward creaming is observed in?
a. W/O
b. O/W
c. Both
d. Micro

Pharmaceutical suspensions are generally…
a. Flocculated
b. De-flocculated
c. Both
d. None

Rate of sedimentation is high in?
a. Flocculated
b. De-flocculated
c. Both
d. None

Cake formation is characteristic feature _
a. Flocculated
b. De- flocculated
c. Thixotropic suspension
d. Structured suspension

For Ideal suspension ,the sedimentation volume should be
a. Zero
b. Equal to one
c. More than one
d. Less than one