Download RGUHS B.Pharm Question Bank Physical Pharmaceutics QP Bank

FirstRanker.com

QUESTION BANK

PHYSICAL PHARMACEUTICS

--- Content provided by‍ FirstRanker.com ---

II YEAR B. PHARM (RS-4)

CHAPTER - I

DISTRIBUTION LAW

Short essay (05 Marks)

1. State Nernst Distribution law. Give its limitations.

--- Content provided by⁠ FirstRanker.com ---

2. Explain the various applications of distribution law in Pharmacy.
3. Explain the effect of molecular association and dissociation on distribution of solute when added to an immiscible system.
4. State and explain Nernst Distribution law along with its limitations.
5. State Nernst Distribution law. Give its applications in pharmacy.

Short Answer (02 Marks)

--- Content provided by​ FirstRanker.com ---

1. State Nernst Distribution law.
2. Enlist any four applications of distribution law.
3. Give the limitations of Distribution law.
4. Give Nernst equation for a molecule under going molecular association.
5. Give Nernst equation for a molecule under going molecular dissociation.

--- Content provided by‌ FirstRanker.com ---

CHAPTER – II

KINETICS AND DRUG STABILITY

Long Essay (10 Marks)

1. Define first order reaction with suitable examples. Deduce an equation for the determination of rate constant, half life and shelf life for first order reaction kinetics.
2. Define Zero order reaction with suitable examples. Deduce an equation for the determination of rate constant, half life and shelf life for zero order reaction kinetics.

--- Content provided by⁠ FirstRanker.com ---

3. Explain chemical degradation of pharmaceutical compounds due to hydrolysis. Explain its preventive measures.
4. Explain chemical degradation of pharmaceutical compounds due to oxidation. Explain its preventive measures.
5. Explain chemical degradation of pharmaceutical compounds due to hydrolysis and oxidation.
6. Enumerate the different methods of determination of order of reaction. Explain any two methods in detail
7. Define stability studies. Explain in detail how the shelf life of pharmaceutical product is determined.

--- Content provided by⁠ FirstRanker.com ---

8. Give the objectives, salient features, methodology and limitations of accelerated stability studies.

Short essay (05 Marks)

1. Explain the factors influencing the rate of a reaction.
2. Explain the preventive measures for chemical degradation due to oxidation.
3. Explain the preventive measures for chemical degradation due to hydrolysis.

--- Content provided by FirstRanker.com ---

4. Explain the graphical and half life method for determination of order of reaction.
5. Define order of reaction. Explain the substitution method for determination of order of reaction.
6. Define order of reaction. Explain the differential method for determination of order of reaction.
7. Explain physical degradation of pharmaceuticals and its preventive measures.
8. Explain environmental factors affecting degradation of drugs.

--- Content provided by⁠ FirstRanker.com ---

9. Define Arrhenius plot and give its significance in calculation of shelf life.
10. Explain effect of temperature on rate of a reaction.
11. Explain methodology to calculate shelf life of a drug with graphical representation.

Short answers (02 Marks)

1. Define rate and order of a reaction

--- Content provided by FirstRanker.com ---

2. Define molecularity of reaction with example
3. Define pseudo zero order reaction with example
4. Define pseudo first order reaction with example
5. Enlist different methods of determination of order of reaction
6. Define zero order reaction with suitable example

--- Content provided by FirstRanker.com ---

7. Define first order reaction with suitable example
8. Give expressions for rate constant and half life of zero and first order rate of a reaction
9. Give expressions for rate constant and half life of first and second order rate of a reaction
10. How are pharmaceuticals stabilized against hydrolysis
11. How are pharmaceuticals stabilized against oxidation

--- Content provided by‍ FirstRanker.com ---

12. Define physical and chemical degradation with examples
13. Enlist environmental factors affecting degradation of drugs
14. Enlist various applications of chemical kinetics in pharmacy
15. Give Arrhenius equation and its significance
16. Define shelf life of a medicinal product

--- Content provided by‍ FirstRanker.com ---

17. Draw Arrhenius plot and mention its use
18. Derive an expression for the time taken for 90% retention of potency for a zero order reaction
19. Derive an equation to show that half life is independent of the concentration in first order reaction
20. Explain why suspension mostly follow zero order
21. Define half life. Explain concept of half life in first order reaction

--- Content provided by​ FirstRanker.com ---

22. Define half life. What relation does half life bear to initial concentration in order and second order
23. Describe pharmaceutical specifications of storage conditions for pharmaceuticals
24. Differentiate between half life and shelf life for a first order reaction

CHAPTER - III

INTERFACIAL PHENOMENA

--- Content provided by‌ FirstRanker.com ---

Long Essay (10 Marks)

1. Define Surface tension. Explain the principle involved in determination of surface tension by capillary rise method. Give its limitations.
2. Define Adsorption isotherm. Explain Freundlich and Langmuir adsorption Isotherms
3. Define Adsorption isotherms. Explain the behavior of various types of adsorption isotherms with example.
4. Define and classify amphiphiles. Explain the mechanistic role of amphiphiles in Pharmacy.

--- Content provided by FirstRanker.com ---

Short essay (05 Marks)

1. Give the principle and working of Dunouy's tensiometer.
2. Explain Freundlich and BET equation with examples.
3. Explain contact angle and its applications in pharmacy.
4. Define HLB and explain Griffins scale.

--- Content provided by FirstRanker.com ---

5. Explain different methods to determine HLB of a surfactant.
6. Explain in detail spreading coefficient with relevant equations.
7. Explain the phenomena of wetting and detergency.
8. Explain the formation of soluble monolayer of an amphiphile.
9. Explain the electrical double layer of an interface.

--- Content provided by FirstRanker.com ---

Short Answer (02 Marks)

1. Define Surface tension and interfacial tension.
2. Enumerate methods to determine Surface tension.
3. Enumerate methods to determine Interfacial tension
4. Give BET equation

--- Content provided by‌ FirstRanker.com ---

5. Define adsorption isotherm.
6. Define Contact angle
7. Define HLB and mention any two applications
8. Define Spreading coefficient
9. Relate contact angle with miscibility

--- Content provided by‍ FirstRanker.com ---

10. Define amphiphile
11. Define CMC
12. What are micelles? Give its structure
13. Give Gibb's adsorption equation
14. Define Nernst Potential

--- Content provided by‌ FirstRanker.com ---

15. Define Zeta potential.
16. List out wetting agents. Describe any one method for determination of wetting
17. Explain the concept of surface tension
18. What is meant by surface excess? Write its applications in pharmacy
19. Classify surfactants based on its applications

--- Content provided by‍ FirstRanker.com ---

20. Define positive adsorption. Give two examples
21. Enumerate applications of amphiphiles in pharmacy

CHAPTER - IV

DIFFUSION AND DISSOLUTION

Short essay (05 Marks)

--- Content provided by FirstRanker.com ---

1. Explain steady state diffusion
2. State and explain Fick's first and second law of diffusion.
3. Explain different diffusion cell apparatus
4. Explain various factors affecting rate of dissolution of drugs with examples.
5. Explain the mechanism of dissolution of tablets

--- Content provided by FirstRanker.com ---

6. Define dissolution? Explain Noyes Whitney equation
7. State and derive Hixon Crowell cube root law
8. Explain various dissolution apparatus
9. Write a note on assembly of different diffusion apparatus

Short answer (02 Marks)

--- Content provided by‍ FirstRanker.com ---

1. Define Diffusion. Enlist types of diffusion.
2. Give Diffusion equation and explain the terms.
3. State Fick's first law with equation.
4. Define flux
5. Explain sink condition.

--- Content provided by‌ FirstRanker.com ---

6. Define steady state diffusion
7. Define Diffusion and Dissolution
8. Enlist any four factors affecting dissolution of drugs
9. State Fick's second law with equation
10. Give Noyes Whitney equation and its terms

--- Content provided by‌ FirstRanker.com ---

CHAPTER - V

RHEOLOGY

Long Essay (10 Marks)

1. Define and explain Non Newtonian flow of liquids
2. Define Newtonian flow of liquids. Explain shear thinning system of liquids

--- Content provided by FirstRanker.com ---

3. Define Thixotropy. Explain different methods for its determination and give its application in pharmacy.
4. Define the mechanism of thixotropy and give its applications in pharmacy.
5. Define Viscosity. Classify different viscometers with examples. With the help of neat diagram explain the principle and working of any one single point viscometer.
6. Define Viscosity. Classify different viscometers with examples. With the help of neat diagram explain the principle and working of any one multipoint viscometer.
7. With the help of neat diagram explain the working principle of Cup & bob and Cone & plate viscometer with its advantages and disadvantages.

--- Content provided by FirstRanker.com ---

Short Essay (05 Marks)

1. Explain the Newtonian system of flow with examples
2. Explain Plastic and dilatant flow of liquids
3. Discuss plastic and pseudoplastic system of flow
4. Explain shear thickening system with examples

--- Content provided by​ FirstRanker.com ---

5. Explain the mechanism of thixotropy with examples
6. Explain the methods to determine the thixotropic behavior of liquids.
7. Explain the principle of cup & bob viscometer
8. Explain the principle of Ostwald's viscometer
9. Explain the physical stability if suspension.

--- Content provided by‍ FirstRanker.com ---

10. Explain the different methods to evaluate the stability of suspensions.

Short Answer (02 Marks)

1. Define Rheology. Give any two applications
2. Describe a Rheogram and Rheopexy
3. What is yield value? Give its applications

--- Content provided by‍ FirstRanker.com ---

4. Define dilatancy with examples
5. Define Newton's law of flow with equation
6. Give examples for plastic and pseudoplastic system of flow
7. What is Negative thixotropy
8. What are Bulges and Spurs

--- Content provided by⁠ FirstRanker.com ---

9. Explain Bulges with example.
10. Explain Spurs with example.
11. Define Viscosity along with its units of expressions
12. What is plug flow? How do you overcome it.
13. Define microemulsions and multiple emulsions

--- Content provided by‍ FirstRanker.com ---

14. Draw flow curve for anti-thixotropy flow and explain its mechanism.
15. Explain the terms shear thinning and shear thickening system. Give example for each type of material.

CHAPTER - VI

MICROMERITICS

Short answers (05 Marks)

--- Content provided by⁠ FirstRanker.com ---

1. State Edmundson's equation
2. State stokes law
3. Explain frequency distribution curve
4. Explain normal distribution curve
5. Explain percent log normal distribution curve

--- Content provided by FirstRanker.com ---

6. What is polydisperse system
7. What are equivalent diameters? Explain martins diameter
8. Explain ferret diameter and projected diameter
9. What is particle size distribution and particle number
10. What is quantasorb. Explain its principle

--- Content provided by​ FirstRanker.com ---

11. What are fundamental properties? Give examples
12. What is bulk density ant true density
13. Define angle of repose. Write its significance
14. What is void volume and porosity
15. What is granular density and true density

--- Content provided by​ FirstRanker.com ---

16. What is compressibility index
17. What is rate of flow of powder and explain carr's index
18. Give packaging arrangement of powders
19. Define volume-surface mean diameter. Give the equation for its calculation.
20. Define shape factor. What is its importance in micromeritics?

--- Content provided by FirstRanker.com ---

21. List four methods to improve the flow properties of granules and powders.
22. List the ways to characterize a powder

Short Essay (05 Marks)

1. How do you represent particle size distribution
2. Enumerate methods to determine the particle size. Explain any two methods to determine the particle size

--- Content provided by‌ FirstRanker.com ---

3. With the help of neat diagram explain Andreason's pipette method to determine the particle size
4. With the help of neat diagram explain principle and working of coulter counter method to determine the particle size
5. What is specific surface area? How is it measured by air permeability method
6. What are derived properties of powders? Explain any two
7. Define angle of repose. Explain the method to determine the same

--- Content provided by⁠ FirstRanker.com ---

8. Explain porosity. Give its applications in pharmacy
9. Enumerate different methods of determination of true density and explain any one.
10. List different types of densities of powder/granules. Write the experimental method for the determination of any one of them.

CHAPTER -VII

COLLOIDS

--- Content provided by‍ FirstRanker.com ---

Long Essays (10 Marks)

1. Discuss the electrical properties and kinetic properties of colloids
2. Discuss the optical and electrical properties of colloids.
3. Discuss the kinetic and optical properties of colloids.
4. What are colloids? Give example. Explain any four methods of preparation of different types of colloids.

--- Content provided by‌ FirstRanker.com ---

5. Explain different methods of preparation and purification of colloids.
6. Explain different purification methods and protection of colloids.

Short Essays (05 Marks)

1. What are colloids? Classify the colloids. Differentiate between different types of colloids.
2. What are hydrophobic colloids? Describe any four preparation methods.

--- Content provided by​ FirstRanker.com ---

3. Discuss association colloids with example.
4. Explain protection of colloids.
5. With the help of a neat labeled diagram explain methods for purification of colloids.
6. Explain optical properties of colloids
7. Explain kinetic properties of colloids

--- Content provided by​ FirstRanker.com ---

8. Explain electrical properties of colloids.
9. Explain DME and its applications.
10. Explain the concept DLVO theory with energy curves. How this theory is applied in stabilizing the colloidal dispersion.
11. What are association colloids? Mention the mechanism of formation of micelles with suitable example.

Short Answers (02 Marks)

--- Content provided by‍ FirstRanker.com ---

1. State and explain Hardy schulze rule
2. What is craft point?
3. Define and classify colloids.
4. What are association colloids?
5. What is gold number?

--- Content provided by​ FirstRanker.com ---

6. What is Tyndall effect
7. What is zeta potential? Give example.
8. What is nernst potential? Give example.
9. What is electro osmosis and electrophoresis?
10. What is streaming potential?

--- Content provided by⁠ FirstRanker.com ---

11. Explain the term colloid and mention its applications.
12. Explain condensation method of preparation of colloids.
13. What is meant by protective colloids? Mention one example for the same.
14. Explain Hofmeister series with example
15. List the effect of mixing different types of colloids.

--- Content provided by​ FirstRanker.com ---

CHAPTER - VIII

COMPLEXATION

Short Essay (05 Marks)

1. Define complex. Classify with example.
2. Explain metal complexes with example.

--- Content provided by‍ FirstRanker.com ---

3. Explain organic molecular complexes with example.
4. Explain inclusion complexes with example.
5. Explain mechanism of formation of hexamine cobalt chloride ligand complex.
6. Explain the mechanism of cyclodextrin drug inclusion complex. Give its applications
7. Explain the various application of complexation in pharmacy with examples.

--- Content provided by‍ FirstRanker.com ---

8. Enumerate different methods of analysis of complex. Explain continuous variation method of analysis.

1. Enumerate different methods of analysis of complex. Explain solubility method of analysis.
2. Enumerate different methods of analysis of complex. Explain distribution method of analysis.
3. Enumerate different methods of analysis of complex. Explain pH titration method of analysis.
4. Explain Werner's postulates with the help of a suitable example.

--- Content provided by‍ FirstRanker.com ---

Short Answers (02 Marks)

1. What are complexes? Give examples.
2. Write importance of complexation in pharmacy.
3. Two applications of inclusion complexes.
4. What is chelating agent? Give its uses.

--- Content provided by‌ FirstRanker.com ---

5. What are clathrates?
6. Enumerate different methods of analysis of complex.
7. What are channel type complex? Give example
8. What are Quinhydrine complex? Give example
9. What are Inclusion complex? Give example

--- Content provided by​ FirstRanker.com ---

10. What are Picric acid complex? Give example
11. Explain the principle involved in the method of pH titration in complexation analysis.

CHAPTER - IX

ANALYTICAL TECHNIQUES

Short Answers (02 Marks)

--- Content provided by‌ FirstRanker.com ---

1. Give any four applications of DSC analytical technique.
2. Give any four applications of SEM analytical technique.
3. Give any four applications of TEM analytical technique.
4. Give any four applications of X-Ray crystallography analytical technique.
5. Give any four applications of X-Ray diffraction analytical technique.

--- Content provided by‍ FirstRanker.com ---

6. Define crystalline and amorphous compound.

FirstRanker.com