Top 80+ Solved Coarse Dispersion- Emulsion MCQ Questions Answer
Q. An emulsifier is considered to be ideal, if it is soluble in
a. Aqueous phase
b. oily phase
c. A & B
d. none of the above
Q. In the stability of emulsion, which important instability step should be prevented?
a. Breaking
b. Coalescence
c. Flocculation
d. Creaming
Q. Emulsion containing more than two phases are called as
a. Mixed emulsion
b. Multiple emulsion
c. Complex emulsion
d. none of the above
Q. Emulsion is
a. stable preparation
b. thermodynamically unstable preparation
c. biphasic system
d. B & C
Q. Which of the following is/ are the theories of emulsification?
a. Monomolecular adsorption theory
b. Multimolecular adsorption theory
c. Solid Particle Adsorption theory
d. All of the above
Q. Which of the following is not the cause of Instability in emulsion
a. Upward Creaming
b. Phase inversion
c. Downward creaming
d. Mottling
Q. Which of the following is a reversible phenomenon
a. Creaming
b. Coalescence
c. Breaking
d. All of the above
Q. The phase inversion occur due to
a. changes in type of emulsifying agent
b. change in phase volume ratio.
c. Both a and b
d. None of the above
Q. Which of the following is used as antioxidants for emulsified systems
a. Dodecyl gallate,
b. Butylated hydroxyanisole (BHT),
c. Butylated hydroxytoluene (BHT)
d. All of the above
Q. Which of the following is identification test for emulsion
a. Dilution test
b. Cobalt Chloride Test
c. Conductivity Test
d. All of the above
Q. When an emulsion is exposed to ultra-violet radiations. If the continuous fluorescence is observedunder microscope, then it is_____________ type emulsion.
a. w/o
b. o/w
c. microemulsion
d. Nano emulsion
Q. Dry Gum Method is also known as
a. Continental method.
b. English method
c. Bottle method
d. Forbe's method
Q. In Dry gum method, 4:2:1 consist of
a. 4 parts oil, 2 parts water, and 1 part emulsifier
b. 4 parts water, 2 parts oil, and 1 part emulsifier
c. 4 parts emulsifier, 2 parts water, and 1 part emulsifier
d. 4 parts oil, 2 parts emulsifier and 1 part water