COLLOIDAL DISPERSION GPAT MCQs Part – 5

TOP 10 MCQ

1. Which of the following protective colloids has high gold number [GPAT-2024]
(a) Acacia
(b) Gelatin
(c) Tragacanth
(d) Albumin

2. Which of the following pharmaceutical solvent has the highest dielectric constant at 25°C [GPAT-2023 SHIFT-I]
(a) Glycerin
(b) Ethanol
(c) Acetone
(d) Phenol

3. Out of the following solvents which one is not a polar solvent [GPAT-2023 SHIFT-I]
(a) Ethanol
(b) Methanol
(c) Hexane
(d) Water

4. Which of these is not a colligative property [GPAT-2023 SHIFT-II]
(a) Osmotic pressure
(b) Depression of freezing point
(c) Elevation in boiling point
(d) Polymorphism

5. The temperature at which the solubility of the surfactant is equal to the CMC is called as [GPAT-2022]
(a) Critical micelle concentration
(b) Krafft point
(c) Cloud point
(d) Solubilization

6. The unequal attractive forces acting on molecules at the surface of a liquid-gas interface compared with molecular forces in bulk liquid is due to [GPAT-2020]
(a) Absence of adhesive force of attraction
(b) Less adhesive force of attraction
(c) Absence of cohesive force of attraction
(d) Less cohesive force of attraction

7. Movement of charged particle through a liquid under the influence of an applied potential difference is known as [GPAT-2019
(a) Sedimentation potential
(b) Streaming potential
(c) Electrophoresis
(d) Electroosmosis

8. As the dielectric constant values increases, the polarity of the solvents [GPAT-2018]
(a) Decreases
(b) Increases
(c) Remains constant
(d) Decreases and then remains constant

9. DLVO theory is [GPAT-2016]
[P] Derjaguin-Landau-Verwey-Overbeek theory
[Q] Used to explain double electric layer theory
[R] Used to explain stability of ointments
[S] Used to explain Brownian movement of colloids
Options:
(a) [P], [Q]
(b) [Q], [R]
(c) [R], [S]
(d) [Q], [S]

10. Colligative properties depend on [GPAT-2016]
(a) Structural arrangement of atoms within the molecules of solute and solvent
(b) The number of solute particles in solution
(c) The physical properties of the solute particles dissolved in solution
(d) Sum of the corresponding properties of individual atoms or functional group within the molecules

ANSWER KEY