FACULTY OF PHARMACY
B. Pharmacy III/IV I Semester (Non-CBCS) (Backlog) Examination,
November 2018
Subject: Physical Pharmacy I
Time: 3 Hours Max. Marks: 70
Note: Answer all questions. All questions carry equal marks.
1. State and explain ideal gas law and the Vander Waals equation for real gases. 5
State and explain the methods for liquefaction of gases. 6
Write a note on liquid crystalline state. 3
OR
State Gibbs phase rule. Explain the phase diagram for two components system. 8
Write the principle of thermal analysis. Explain Differential Scanning
Calorimetry with applications. 6
2. State and explain first law of thermodynamics. 5
Derive an expression for maximum work done in isothermal reversible expansion
of an ideal gas. 9
OR
Derive an expression to determine efficiency of steam engine. 6
Define Heat of formation ii) Heat of combustion iii) Heat of Neutralization 8
3. What are colligative properties? Explain any one colligative property in
determination of molecular weight. 9
Write about Soresen's pH scale and its applications. 5
OR
Explain the concepts of activity and activity coefficients. Write and explain the
Debye Huckel theory and osmotic coefficient for determining activity coefficient. 7
What are ideal solutions and real solution? Explain deviations of Raoult's law. 7
4. What is buffer? Derive the buffer equation to prepare an acidic buffer system. 8
Write characteristics of buffers. Write applications of buffers in vivo biological
buffer systems with examples. 6
OR
Explain various methods to adjust isotonicity and pH. 10
Write Van Slyke's equation for buffer capacity and maximum buffer capacity and
its applications. 4
contd..2..
Library
G.Pulla Reddy College of Pharmacy
HyderabadOU 1701 OU 1701
Code No. 13045 Non-CBCS

5. Write a note on different types of electrodes. Explain measurement of pH using
Hydrogen electrode. 9
How do you measure EMF of a cell? 5
OR
Write a note on calomel electrode and hydrogen electrode. 6
What is a catalysis and catalyst? Write types of catalysts, catalytic reactions.
Write factors affecting on the catalysis.