Colloidal Dispersion(General Knowledge > General Science ) Questions and Answers

Question 1. Name the type of colloidal dispersion to which electrolytes are normally added in small quantities to stabilize
  1.    Lowering interfacial tension
  2.    Hydration of solids
  3.    Formation of micelles
  4.    Lowering interfacial tension
Explanation:-
Answer: Option B. -> Hydration of solids
Question 2. Which of the following colloid is difficult to prepare?
  1.    Emulsion
  2.    Suspension
  3.    Colloidal dispersions
  4.    Molecular dispersions
Explanation:-
Answer: Option D. -> Molecular dispersions
Question 3. A suspension is formed from uniform particles of solid, of diameter 10 Mm, suspended in a solvent
  1.    Monodisperse and coarse
  2.    Monodisperse and colloidal
  3.    Polydisperse and coarse
  4.    Polydisperse and colloidal
Explanation:-
Answer: Option A. -> Monodisperse and coarse
Question 4. Which quality of dispersed phase is responsible for the increased viscosity of a hydrophilic colloidal dispersion?
  1.    Streaming potential
  2.    Oxidation potential
  3.    Reduction potential
  4.    Sedimentation potential
Explanation:-
Answer: Option D. -> Sedimentation potential
Question 5. An example for Colloidal systems is:
  1.    clays and gels
  2.    ointments and pastes
  3.    solutions of soaps and proteins
  4.    suspensions and emulsions
Explanation:-
Answer: Option C. -> solutions of soaps and proteins
Question 6. What is the size of colloidal particles?
  1.    10-20 nm
  2.    30 to 50 nm
  3.    More than 20 nm
  4.    Less than 10 nm
Explanation:-
Answer: Option A. -> 10-20 nm
Question 7. Where does colloidal solution find application in?
  1.    In chromatic chemical industries
  2.    In milk industries
  3.    In textiles
  4.    In crystallography
Explanation:-
Answer: Option B. -> In milk industries
Question 8. What is called a dispersion phase?
  1.    It is the basic colloidal layer
  2.    It is the secondary layer
  3.    It is the main layer
  4.    It is the secondary layer in which the colloidal particles are dispersed
Explanation:-
Answer: Option D. -> It is the secondary layer in which the colloidal particles are dispersed
Question 9. A _________ is a sol of solid particles scattered in a liquid
  1.    Colloidal suspension
  2.    Streaming potential
  3.    Sedimentation potential
  4.    Electrophoresis
Explanation:-
Answer: Option A. -> Colloidal suspension
Question 10. _________ is the charged field generated by charged particles moving in a stationary liquid
  1.    Colloidal suspension
  2.    Sedimentation potential
  3.    Streaming potential
  4.    Electrophoresis
Explanation:-
Answer: Option C. -> Streaming potential
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