Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
B.PHARM SEMESTER EXAMINATION -WINTER 2018
Subject Code:BP302TP Date: 04/12/2018
Subject Name: Physical Pharmaceutics I
Time:10:30 AM TO 01:30 PM Total Marks: 80
Instructions:
1. Attempt any five questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

What is distribution law? State its limitations and applications.
06

Discuss factors affecting solubility of gases in liquids
05

Define Raoult's Law. What do you mean by Real solutions and Ideal solutions? Discuss in detail.
05
Q.2

Classify types of complexes. How chelates are different from organic molecular complexes?
06

Write a note on drug complexes.
05

Differentiate between clathrates and cyclodextrins
05
Q.3

Explain different methods to determine surface tension
06

Define surfactant. What is HLB scale? Classify surfactant activity based on HLB value.
05

How is spreading co-efficient calculated?
05
Q.4

What is kinetic molecular theory? Discuss.
06

Define the phenomenon of polymorphism with suitable examples.
05

Discuss the properties and significance of liquid crystals
05
Q.5

Enlist different methods of analysis of complexes and discuss any one in detail.
06

What is refractive index and how it is measured? How it used to identify a drug compound?
05

What is critical solution temperature? Explain phenol-water system.
05
Q. 6

What is common ion effect? Discuss buffer equation for weak acid and its salt.
06

Write a short note on pharmaceutical buffers.
05

What is maximum buffer capacity? Determine maximum buffer capacity of a phosphate buffer with a total concentration of 0.050 mole/litre.
05
Q.7

Define aerosol? Write a brief note on it.
06

Briefly discuss complete and partial miscibility.
05

Write a note on factors affecting protein binding.
05