Download RTMNU B.Pharma 5th Semester 2016 Summer Pharmaceutics V (Physical Pharmacy) Question Paper

Download RTMNU (Rashtrasant Tukadoji Maharaj Nagpur University) B.Pharma (Bachelor of Pharmacy) 5th Semester 2016 Summer Pharmaceutics V (Physical Pharmacy) Question Paper

TKN/KS/16 ?6993
Fifth Semester Examination For the Degree
of Bachelor of Pharmacy
PHARMACEUTICS V (PHYSICAL PHARMACY)
5T1
Time : Three Hours] [MaX. Marks : 80
N. B.
: (1) Question No.1 is Compulsory.
(2) Attempt any Four questions from the remain?
ing.
(3) Draw neat labeled diagram wherever neces?
sary.
(4) Discuss the reaction, mechanism wherever
necessary.
(5) Use of electronic calculator is permitted.
(6) Assume suitable data wherever necessary.
1. Solve any Five :?
(a)
(b)
(C)
(d)
(e)
(f)
(g)
Emulsions are generally milky. Justify.
Define HLB. Classify surfactants according to
HLB scale.
What are lyophobie colloids ?
Differentiate ?occulated and de?occulated
suspensions.
How are micro emulsions different from emulsion.
Define spreading coef?cient. Write signi?cance of
?V6 spreading coefficient.
Explain in short mechanism of particle
consolidation. 5X4=20
TKN/KS/16 ?6993 Contd.
Explain in detail factors affecting micelle formation.
How is charge developed on a particle dispersed in a
medium ? Define zeter potential and explain its role in
stability of dispersed system. 15
Explain the methods to determine molecular weight of
colloids. 15
(a) Explain adsorption of gases on solid surface. 7
(b) Describe adsorption technique for surface area
determination. 8
What are fundamental and derived properties ? Explain
particle size determination by sedimentation method.
15
Write short notes on any two :?
(a) Stabilization of emulsion.
(b) Peptization and coacervation of colloids.
(c) Donnan Membrane equilibrium.
((1) Controlled ?occulation. 15
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