Download RTMNU B.Pharma 5th Semester 2017 Summer Pharmaceutics V (Physical Pharmacy) Question Paper

Download RTMNU (Rashtrasant Tukadoji Maharaj Nagpur University) B.Pharma (Bachelor of Pharmacy) 5th Semester 2017 Summer Pharmaceutics V (Physical Pharmacy) Question Paper

NKT/KS/l 7/6564
B.Pharm. Semester?V (C.B.S.) Examination
PHARMACEUTICS?V (Physical Pharmacy)
Paper?l
Time : Three Hours] [Maximum Marks : 80
Note :?(1)
(2)
(3)
(4)
(5)
(6)
(7)
1. Attempt
(a)
(b)
(c)
(d)
(e)
(f)
(g)
2. (a)
(b)
3. (a)
(b)
Question N0. 1 is compulsory.
Attempt any four from remaining questions.
All questions carry equal marks.
Draw neat labelled diagrams wherever necessary.
Assume suitable data wherever necessary.
Discuss the reaction, mechanism wherever necessary.
Use of electronic calculator, excluding programmable calculator is permitted.
any five from following :
Why does microemuision appear transparent to eyes ?
Why surface tension / interfacial tension exists ?
Define surfactant. Give various characteristics of surfactant.
Compare lyophilic and lyophobic colloids.
Disperse systems are thermodynamically unstable, justify.
Write in brief about evaluation of suspensions.
De?ne angle of repose. Explain effect of particle size on ?owability of powders.
5X4=20
Define adsorption isotherm. Explain various types of adsorption isotherms. 10
Explain electrical diffuse double layer. 5
Describe mechanism of droplet stabilization of emulsion. 10
Explain various detection tests for type of emulsion. 5
NXO?12540
1 (C0ntd.)

4. (21) Discuss methods for determination of particle surface area. 8
(b) Explain controlled ?occulation in formulation and stabilization of suspension. 7
5. Describe Viscosity, osmotic pressure and sedimentation properties of colloids and their applicability
in molecular weight determination of colloidal material. 15
6. De?ne Critical Micelle Concentration (CMC). Explain phenomenon of micelle formation. Describe
various factors affecting micelle formation. 15
7. Write short notes on any two :
(a) Micellar solubilization
(b) Assessment of shelf life of emulsion
(0) Stability of colloidal system. 7.5><2=15
NXO?12540 2 NKT/KS/17/6564