FACULTY OF PHARMACY
B. Pharmacy 3/4 I-Semester (Suppl.) Examination, April 2016
Subject Physical Pharmacy I
Time 3 Hours Max. Marks: 70
Note: Answer all questions. All questions carry equal marks.
1 State gas laws. Write the ideal gas law. How do you determine molecular weight
of gas using gas laws.
Explain phase diagram for eutectic mixture.
OR
Write notes on
X-ray diffraction
Differential scanning calorimetry
Amorphous solid
2 State and explain first and second law of thermodynamics.
Write a note on free energy function and work function and their applications.
OR
Explain the terms enthalpy, entropy, heat capacity and internal energy.
Write about heat of combustion and heat of neutralization.
3 Define and explain various methods of expression of (molarity, molality, normality,
w/w and
Write a note on Sorenson's pH scale.
OR
What are colligative properties? Explain elevation of boiling point as colligative
property. How do you calculate molecular weight using the same?
Explain and derive an equation for ionization of weak acid.
4 What is buffer capacity? Write the equations for buffer capacity and maximum
buffer capacity.
Explain the relationship between pH and solubility.
OR
Explain white Vincent method for adjusting isotonicity. How do you render 30ml of
solution of procaine hydrochloride isotonic with body fluid. (sodium chloride equivalent
of procaine hydrochloride is 0.21).
Write a note on physiological buffers.
5 Write about different types of catalysts and catalytic reactions.
Explain the working of pH meter.
OR
Discuss the principles and working of
Hydrogen electrode
Oxidation reduction electrode