Download RTMNU B.Pharma 5th Semester 2015 Winter Pharmaceutics V (Physical Pharmacy) Question Paper

Download RTMNU (Rashtrasant Tukadoji Maharaj Nagpur University) B.Pharma (Bachelor of Pharmacy) 5th Semester 2015 Winter Pharmaceutics V (Physical Pharmacy) Question Paper

NTK/KW/ 15/6993
Faculty of Pharmacy
B.Pharm. Fifth Semester (C.B.S.) Examination
PHARMACEUTICS?V
(Physical Pharmacy)
Paper?I (5 T 1)
Time?Three Hours] [Full Marks?80
N.B. :? (1) Question N0. 1 is compulsory.
(2) Solve any FOUR questions from the remaining.
(3) Draw neat labeled diagram wherever necessary.
(4) Discuss the reaction, mechanism wherever
necessary.
(5) Use of electronic calculator is permitted.
(6) Assume suitable data wherever necessary.
1. Solve any ?ve : 5X4=20
(a) De?ne colloids. Give types of colloids.
(b) What is spreading coefficient ? Derive equation for
spreading coef?cient.
(c) Disperse systems are thermodynamically unstable,
justify
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5.
(d)
(e)
(f)
(5;)
De?ne :
(1) Speci?c surface
(ii) Particle number
(iii) Equivalent spherical diameter
(iv) True density.
Explain cloud point and kra? point.
Why are ?occulated suspensions preferred over
de?occulated ones ?
How does change in temperature leads to
destabilization of emulsion ?
De?ne critical micelle concentration. Explain phenomenon
of micelle formation and explain various factors affecting
micelle formation. 15
Describe various propetties 0f colloids for determination
of molecular weight of polymers. 15
(a)
(b)
(a)
Define adsorption Isotherm. Describe adsorption
phenomenon ofgases 0n solids with di?erent adsorption
Isotherm. 8
Describe evaluation parameters for suspension.
7
Define micromeritics. What is Edmundson
equation ? How are the various statistical diameters
calculated using Edmundson equation ? 10
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7.
(b)
Describe Coulter counter method for determination
of particle volume. 5
(a) Describe mechanism of droplet stabilization. 8
(b) Explain various instability problems of emulsion.
7
Write short notes on (any two) : 15
(a)
(b)
(C)
(d)
Micellar Solubilization
Controlled ?occulation
Assessment of shelf life of emulsion
Derived properties of powder.
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