Physical Pharmaceutics 1 Question bank Sem-3 b pharm

Physical Pharmaceutics 1 Question bank for b pharmacy semester-3

Physical Pharmaceutics 1 Question bank released by rguhs Bangalore, it contains all the important questions according to syllabus also in PCI regulations.

UNIT I: Solubility of drugs Physical Pharmaceutics1

Long essay

10 Marks

1. Define solubility. Explain the various factors affecting solubility of solids in liquids.
2. Define and derive Raoult’s law. Write its applications
3. Explain in detail about the different factors affecting the solubility of drugs
4. Define azeotrpic mixtures. With the help of neat diagram explain in detail fractional distillation process
5. Describe the method of determining solubility of solids in liquids
6. Define dissolution. Explain the different quantitative factors influencing solubility of drugs.

Short Essay

5 Marks

1. Explain solubility of partially soluble Liquid system with example.
2. Explain sublimation critical point phone.
3. Explain Critical solution temperature and mention their applications
4. Explain real solutions with examples
5. What are paratonic solutions? What are the effects of injecting paratonic solutions
6. Explain the various applications of distribution law in Pharmacy
7. Explain the method for determination of CST.
8. Explain various ideal solubility parameters for solubility process.
9. Discuss the different types of dissolution apparatus.
10. State and explain Nernst Distribution law along with its limitations
11. What are azeotropic mixtures? Explain with an example
12. Write a note on fractional distillation.

Short Answers

2 marks

1. Define Diffusion and Dissolution.
2. Define vapour pressure
3. Liquefaction of gases.
4. Define the term isotonicity with an example.
5. Differentiate between isotonic and iso-osmotic Solutions.
6. Limitations of Raoult’s

UNIT II: States of Matter and properties of matter Physicochemical properties of drug molecules

Long essay

Marks 10

1. List out physical properties of drug molecules. Describe any two of them with suitable Example.
2. Describe the principle, construction and working of Abbe’s refractometer. Write anote On its application.
3. Discuss dielectric constant and dipole movement with their applications in Pharmacy
4. Define optical rotation. Discuss in detail working of polarimeter.
5. Define dipole moment. Explain in detail its method of determination.
6. Write the different methods for the determination of surface tension. 108-113

Short essay

Marks 05

1. What are eutectic mixtures? Explain with examples.
2. Explain sublimation critical point
3. Explain the determination of refractive index by Abbey’s refractometer
4. Define dielectric constant Write a note on its application in Pharmacy
5. Explain in detail different states of matter with examples.
6. Discuss in detail changes in states of matter.

Short answer

Marks 02

1. Define Relative humidity
2. Define latent heat
3. Define vapour pressure
4. Define normality and molarity of solution
5. What you mean by polarization
6. Liquefaction of gases.
7. What do you mean by glassy states?
8. What are aerosols?
9. Refractive Index and its application
10. Define polymorphism with example.

UNIT :III: Surface and interfacial phenomenon Physical Pharmaceutics 1 Question bank

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
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.

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,
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.

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
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
10. Define amphiphile
11. Define CMC
12. What are micelles? Give its structure
13. Give Gibb’s adsorption equation
14. Define Nernst Potential
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
20. Define positive adsorption. Give two examples
21. Enumerate applications of amphiphiles in pharmacy

UNIT IV: Complexation and protein binding Physical Pharmaceutics 1 Question bank

Short Essay

(05 Marks)

1. Define complex. Classify with example.
2. Explain metal complexes with example.
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.
8. Enumerate different methods of analysis of complex. Explain continuous variation Method of analysis
9. Enumerate different methods of analysis of complex. Explain solubility method of Analysis.
10. Enumerate different methods of analysis of complex. Explain distribution method of analysis,
11. Enumerate different methods of analysis of complex. Explain pH titration method of analysis,
12. Explain Werner’s postulates with the help of a suitable example.

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

UNIT V: pH, buffers, and Isotonic solutions Physical Pharmaceutics 1 Question bank

(5 marks)

Short essay

1. Discussion the reason for adjusting pH of a dosage form
2. What you mean by buffer capacity and buffer equation
3. Define a buffer. Explain the mechanism of action of buffers
4.  Write a note on method of determination of pH.
5. Define pH. Deduce buffer equation for weak acid and its salt with a strong base.
6. Applications of buffers in pharmaceutical and biological system.
7. Write the calorimetric method of determination of pH.
8. Write a note on buffer action and buffer capacity.
9. Discuss the significance of buffers in preparation of isotonic solutions.
10. Write the pharmaceutical applications of buffers.
11. Define isotonic solutions. Explain the adjustment of tonicity by any 1 method.
12. Enumerate different methods of analysis of complex. Explain pH titration method of analysis.

Short answers

(2 marks)

1. Give any four examples of pharmaceutical buffers
2. Explain Sorensen’s pH scale
3. What are buffered isotonic solutions
4. Give the buffer equation for an acid and base
5. What are Hypotonic Solutions. Give examples
6. Give the buffer equation for an acid and base
7. Types of pH determination methods
8. Isotonic and paratonic solutions
9. Give Henderson-Hesselbatch equation
10. What are paratonic solutions? What are the effects of inject ing paratonic solutions?
11. Explain Griffins scale in detail.
12. Define the term isotonicity with an example
13. Explain buffer equation.
14. Write any two applications of buffers in pharmacy.
15. Write any four examples of pharmaceutical buffers.
16. Write any two applications of buffered isotonic solutions.
17. Write the principle involved in the method of pH titration in complexation analysis.
18. Write any four applications of buffers in biological systems
19. What are buffered isotonic solutions?
20. What are the effects of injecting hypotonic solutions?