Physical Pharmaceutics 4th sem Colloidal dispersions mcq

Questions :-

1. The particle size range of colloidal dispersion is -

A. 1 nm to 1 μm.

B. 1 nm to 0.5 μ.

C. 1 nm to 100 nm.

D. Greater than 100 nm.

Ans :-

2. Molecular dispersions have size.....

A. Less than 1nm.

B. Equal to 1 nm.

C. More than 1nm.

D. More than 2 nm.

Ans :- A

3. Suspension is an example of.....

A. Colloid.

B. Coarse dispersion.

C. True solution.

D. Semisolid.

Ans :- B

4. Flocculation is a phenomenon seen in …

(a) Suspensions.

(b) Solutions.

(c) Emulsions.

(d) Semisolids.

Ans :- A

5. Emulsions are thermodynamically.....

A. Stable.

B. Safe.

C. Unstable.

D. Unsafe.

Ans :- C

6. Surfactants play the role of.....

A. Increasing viscosity.

B. Reducing surface tension.

C. Increasing kinetic energy.

D. Increasing sedimentation.

Ans :- B

7. Ligands with multiple binding sites are called.....

A. Unidentate.

B. Bidentate.

C. Tetradentate.

D. Polydentate.

Ans :- D

8. Lyophobic colloids are also called as.....

A. Solvent loving.

B. Solvent hating.

C. Solvent neutral.

D. Solvent non reacting.

Ans :- B

9. Tyndall effect is exhibited by.....

A. Solution.

B. Suspension.

C. Emulsion.

D. Colloid.

Ans :- D

10. Lyophilic colloids are also known as.....

A. Solvent loving.

B. Solvent hating.

C. Solvent neutral.

D. Solvent non reacting.

Ans :- A

11. Brownian movement is exhibited by.....

A. Solution.

B. Suspension.

C. Emulsion.

D. Colloid.

Ans :- D

12. The reaction where the rate is independent of concentration of reactants is called as .......... order reaction.

A. Zero.

B. First.

C. Pseudo.

D. Second.

Ans :- A

13. Accelerated stability studies help in predicting.....

A. Expiry date.

B. Solubility.

C. Order.

D. Molecularity.

Ans :- A

14. Molecularity of reaction gets influenced by.....

A. Time.

B. Pressure.

C. Temperature.

D. It never changes.

Ans :- D

15. Polymer solutions are examples of.....

A. Suspension.

B. Emulsion.

C. Colloidal dispersion.

D. True solution.

Ans :- C

16. Full form of BCS is.....

A. Biopharmaceutical Classification System.

B. Biological Classification System.

C. Bioinformatics Classical System.

D. Biopharmaceutics Classical System.

Ans:- A

17. The .......... sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated groups.

A. Ligand.

B. Donor.

C. Oxidation.

D. Coordination.

Ans :- D

18. In coordination chemistry, the donor atom of a ligand is.....

A. A Lewis acid.

B. The counter ion.

C. The central metal atom.

D. The atom in the ligand that shares an electron pair with the metal.

Ans :- D

19. What is the driving force for Fick’s law ?

A. Concentration.

B. Concentration gradient.

C. Pressure.

D. Temperature.

Ans :- B

20. Phase inversion is exhibited by.....

A. Emulsions.

B. Suspension.

C. Solution.

D. Colloid.

Ans :- A

21. The formulation of pharmaceutical dosage form refers to.

A. It’s compounding.

B. It’s constituents.

C. It’s design.

D. It’s application.

Ans :- B

22. Good manufacturing practice protocols in the production of pharmaceutical dosage forms ensures their.

A. Potency.

B. Purity.

C. Quality.

D. Any of the above.

Ans :- D

23. What is the best description of blood ?

A. Sol.

B. Foam.

C. Solution.

D. Aerosol.

Ans :- A

24. Colloid can…..

A. Scatter light.

B. Absorb heat.

C. Not scatter light.

D. Evolve heat.

Ans :- A

25. The dispersion medium for the formation of colloids forms a non-continuous phase.

A. True.

B. False.

Ans :- B

26. Which one of the following sweetener is ≈ 600times sweeter than sucrose.

A. Sucralose.

B. Acesulfame-k.

C. Aspartame.

D. Sodium cyclamate.

Ans :- A

27. The labelled expiry date of a pharmaceutical product determinests shelf-life and indicates the date.

A. From which it may still be dispensed for another six months.

B. Beyond which it should not be dispensed.

C. One month prior to which it should not be dispensed.

D. From which the product may be used safely for a year.

Ans :- B

28. The movement of liquid medium through a bed stationary charged particle under the influence of an applied potential difference known as.

A. Electrophoresis.

B. Electro osmosis.

C. Sedimentation potential.

D. Streaming potential.

Ans :- B

29. Association colloids are also called as.....

A. Amphophilic colloids.

B. Lyophilic colloids.

C. Amphiphilic colloids.

D. Lyophobic colloids.

Ans :- C

30. A particles continuous strike to each other and to the wall of container is known as…..

A. Brownian motion.

B. Sedimentation.

C. Ultra microscopy.

D. Tyndall effect.

Ans :- A

31. When an electric field is applied on colloidal dispersion, then the particle carried charges move toward opposite electrode known as.....

A. Electrical double layer.

B. Electrophoresis.

C. Coacervation.

D. Velocity.

Ans :- B

32. Amount of protective colloids in mg, which prevent the coagulation of gold solution (10ml) when 1ml of NaCl added to it it.....

A. Protective action.

B. Peptides.

C. Diffusion.

D. Gold number.

Ans :- D

33. The phenomena of deposition of solid colloid particle when oppositively charges electrolyzed on it…..

A. Hardy Schulze law.

B. Fick’s law.

C. Vanderwall law.

D. Arrhenius law.

Ans :- A

34. It is the process of converting a precipitate into colloidal dispersion by shaking it with dispersion medium in the presence of small amount of peptizing agent is known as.....

A. Electrolyzed.

B. Peptization.

C. Protective action.

D. Concentration gradient.

Ans :- B

35. The addition of lyophilic solution into a lyophobic colloidal solution prevent a lyophobic solution from a coagulation is known as.....

A. Brownian movement.

B. Electrophoresis.

C. Peptides.

D. Protective action.

Ans :- D

-:Thank you:-