Download SGBAU B-Pharma 2019 Summer 4th Sem Sem IV Physical Pharmaceutics II New Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B.Pharma 2019 Summer (Bachelor of Pharmacy) 4th Sem Sem IV Physical Pharmaceutics II New Previous Question Paper

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P. Pages : 3
Time : Three Hours
B. Pharm. F ourth Semester (New)
Physical Pharmaceutics - II : BP 403 T
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IMIMHMI Max.Marks:75
Notes: 1.
2.
3.
MCQ's.
i)
ii)
iii)
vi)
vii)
viii)
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Answer all questions.
Assume suitable data wherever necessary.
Illustmte your answer necessary with the help of neat sketches.
.20
------ dispersions are unstable in the presence of even small concentration of
electrolytes.
a) Lyophilic b) Hydrophilic
c) Amphiphilic d) Lyophobic
The size of dispersed phase particles of colloidal dispersions is ---------- .
a) Less than 1 nm b) Greater than 5 pm
c) 1 nm to 0.5 pm (1) Greater than 0.5 pm
The protective property of hydrophilic colloids is expressed in terms of --------?-.
a) Gold number b) Lyotropic series
c) HLB value d) All of the above
The ability of amphiphilic colloids to increase the solubility of normally insoluble
materials in solution is known as ---------- .
a) Peptization b) Sensitizatidn
c) Protection d) Micellar solubilization
Ostwald?s viscometer is a -------- - viscometer.
a) Capillary b) F alling sphere
c) Cone and plate (1) Cup and bob
Bingham bodies are ---?--- in nature.
a) Shear thickening b) Dilatant
c) Shear thinning d) Newtonian
The ---------- is a dimensionless quantity.
3) Stress b) Rate of shear
c) Strain d) Elastic modulus
De?occulated suspensions containing high concentration of small particles exhibit
----- ?ow.
a) Newtonian b) Plastic
c) Pseudo-Plastic d) Dilatant
1 P.T.0

ix)
x)
xii)
The diameter of a sphere undergoing sedimentation at the same rate as the particle
under quesiion is known as -------- diameter.
a) Surface b) Volume
c) Projected d) Stoke?s
The true density of paniclcs can be mezmured by ----?---- method.
a) Mercury displacement b) Liquid displacement
c) Helium penetration d) All of the above
The ratio 01? void volume to bulk volume is known as ----------.
a) Porosity b) Compressibility
c) Bulkincss d) Bulk density
'lhe theoretical porosity ot'powder containing uniform spheres is ------- in the
' closest pack.
a) 26% b) 74%
c) 48% d) 52%
xiii)
xiv)
xx')
X\ i)
XV ii)
xviii)
xix)
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The velocity of suspended particles is inversely proponional to ----------.
21) Density ofdisperscd phase
b) Density ot?dispersion medium
c) Radius ofdispersed phase particles
d) Viscosit) nfdispersion medium
The velocity of sedimentation of dispersed particles is ------------ in ?occulated
suspensions them de?occulaled.
a) Slower b) Faster
c) Same d) None of a? b. c
Surfactants form -------- ?lm at oilw interface in an emulsion.
a) Protective b) Monomolecular
c) Multimnlccular d) Particulate
-------------- is a reversible incompatibility observed in emulsions.
a) Breaking b) Phase inversion
c) Creami n g d) C oalescence
The rate of ---------- order reactions is proportional to the concentration.
a) Zero b) Pseudo
c) First d) Second
The unit for rate constant of 21 -------- order reaction is second".
a) Zero b) Pseudo
c) First d) Second
Classic-collision theory explains the effect of ----------- on rates of reactions.
a) PH b) Temperature
c) Catalysis d) Humidity
[J

xx) The half-life in a zero-order reaction is described by ---------- .
A 0.693 .
l _ 0 l -
a) t/2_2Ko b) t?? K ,
1 _ L 1 _ Ao ? A
c) tA_ aK d) tAr- 2K0
Long answer questions any two. 20
a) Classify the flow properties of liquids with relevant equations and rheograms. Add a
note on Thixotropy. ' ,
b) Describe the derived properties of powders in details.
0) De?ne rate, order & molecularity of a reaction & den've equation for ?rst order
reaction.
Short answer Questions any seven. . 35
a) ? Write a note on expiration dating of phannaceutical dosage forms.
b) Describe any two methods of determination of particle size.
c) Write in brief about equivalent spherical diameters.
(1) Give an account of optical properties of colloids.
6) Write a note on protective Celloid action.
f) Discuss Bulges & spurs with relevant examples.
3) Enlist the instabilities in emulsions and discuss any two in details.
h) Write a note on sedimentation parameters. .
i) Discuss Arrhenius theory in brief.
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