Top 80+ Solved Colloidal Dispersion MCQ Questions Answer
Q. An example for colloidal systems is:
a. clays and gels
b. ointments and pastes
c. solutions of soaps and proteins
d. suspensions and emulsions
Q. The criterion to call a system ‘colloid’ is
a. a fine state of subdivision of dispersed phase
b. dispersed particles are in the size range of 1 nm to 1 µm
c. interface is very extensive
d. the presence of dispersed phase in a dispersion medium
Q. Solutions of proteins and starch in water are the examples of the colloidal type:
a. hydrophilic
b. hydrophobic
c. lyophilic
d. lyophobic
Q. Electrodialysis method is employed in the colloidal chemistry for the purpose of :
a. Indentification
b. preparation
c. Purification
d. Stabilization
Q. Which of the following DO NOT form colloid spontaneously?
a. association
b. lyophilic
c. lyophobic
d. micellar
Q. Sulphur sol is an example of colloidal type:
a. Association
b. hydrophilic
c. lyophilic
d. lyophobic
Q. In the determination of size, shape and structure of colloidal particles, which one of the following CANNOT be used?
a. electron microscope
b. instrument measuring light scattering
c. Langmuir film balance
d. ultramicroscope
Q. Surfactant solutions are termed as association colloids when their concentrations are:
a. insufficient to saturate the bulk phase
b. insufficient to saturate the interface
c. less than critical micellar concentration (cmc)
d. more than cmc
Q. Name the type of colloidal dispersion to which electrolytes are normally added in small quantities tostabilize:
a. association
b. lyophilic
c. lyophobic
d. micellar
Q. Protective colloids DO NOT:
a. aid in dispersion
b. decrease the zeta potential
c. lower the interfacial tension
d. offer a mechanical barrier
Q. Which one of the following colloids is difficult to prepare?
a. association
b. hydrophilic
c. hydrophobic
d. lyophilic
Q. In high concentrations, electrolytes destabilize a lyophilic sol by a process termed as :
a. coagulation
b. dilution
c. salting out
d. solvation
Q. Which quality of the dispersed phase is responsible for the increased viscosity of a hydrophiliccolloidal dispersion?
a. charge
b. shape
c. size
d. surface area