Download OU B.Pharma 3-1 Year 2013 7219 Physical Pharmacy Question Paper

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Code No. 7219

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FACULTY OF PHARMACY

B. Pharmacy 3/4 Year I-Semester (Main) Examination, November 2013

Subject : Physical Pharmacy - |

Time: 3 Hours Max.Marks: 70

Note: Answer all questions. All questions carry equal marks.

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1. (a) Explain the methods to achieve liquefication of gases. 6
   (b) Define refractive index. What is molar refraction? 4
   (c) Write about liquid crystalline state and its applications. 4
   OR
   (d) What is polymorphism? Explain its applications giving suitable examples. 8
   

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   (e) Write the principle and applications of differential scanning calorimetry. 6
2. (a) State second law of thermodynamics. How do you calculate efficiency of steam engine? 8
   (b) Define and explain enthalpy and entropy. 6
   OR
   (c) State and explain Hess’s law of constant heat summation. 7
   

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   (d) Define free energy. Write about free energy functions and its applications. 7
3. (a) Define Raoults law. Explain deviations from Raoults law. 7
   (b) Explain the concept of activity and activity coefficients. 7
   OR
   (c) What are colligative properties? How do you determine freezing point depression? 7
   

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   (d) Derive the equation for ionization of a weak acid. 4
   (e) Write about Sorenson’s pH scale. 3
4. (a) Explain class II methods for calculation of isotonicity. 8
   (b) What is common ion effect? Derive buffer equation for a weak acid. 6
   OR
   

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   (c) How do you prepare pharmaceutical buffer? Give examples. 7
   (d) Write the equations for buffer capacity and maximum buffer capacity and explain the terms therein. 4
   (e) Write a note on physiological buffers. 3
5. (a) Explain different types of electrodes. 10
   (b) Write Nernst equation and explain the terms therein. 4
   

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   OR
   (c) How do you measure pH using glass electrode. 7
   (d) Explain ion sensitive electrodes. 7

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