This download link is referred from the post: RTMNU B-Pharm Last 10 Years 2010-2020 Previous Question Papers || Rashtrasant Tukadoji Maharaj Nagpur University
NRJ/KW/17/4279
B.Pharm Examination
PHARMACEUTICS—V (Physical Pharmacy)
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Paper-1
[Maximum Marks : 80
Time : Three Hours]
N.B. :- (1) Question No. 1 is compulsory.
(2) Attempt any four questions out of remaining.
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(3) All questions carry equal marks.
(4) Draw neat labelled diagram wherever necessary.
(5) Assume suitable data wherever necessary.
- Attempt any five of the following :
- Explain why mixed emulsifiers produce a more stable emulsion than single emulsifier.
- How the surfactants are classified according to HLB ?
- What is Hofmeister series ?
- What is critical micelle concentration ? What is its significance ?
- What are the factors responsible for Sedimentation of particles ? How they can be controlled ?
- Describe the mechanism by which particle gets charged in the medium.
- Define :
- Interfacial tension
- Adsorption.
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5×4=20
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- Give the applications of colloids.
- What is effect of electrolyte on CMC of surfactants ?
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8
7
- What is zeta potential ? What is Nernst potential and electrokinetic potential ? How does it control physical stability of emulsions ?
15
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- Derive the equation for Langmuir's adsorption isotherm.
15
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- Explain DLVO theory of suspensions.
- Write a note on controlled flocculation.
8
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7
- What is angle of repose? How it is determined ? What is its significance ? Describe derived properties of powders.
15
- Write notes on (any two)
- Porosity, its types and significance
- Davies theory of emulsions
- Classification of surfactants as per chemical structure.
15
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ΡΟΥ-27552
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This download link is referred from the post: RTMNU B-Pharm Last 10 Years 2010-2020 Previous Question Papers || Rashtrasant Tukadoji Maharaj Nagpur University