Multiple Choice Questions (MCQs) from Rheology in Pharmaceutics
1: The principle method for measuring viscosity is;a) Capillary viscometer
b) Concentric cylinder viscometer
c) Falling or rolling sphere viscometer
d) All of the above
e) Both a & b
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2: Materials whose consistency depends on the duration of shear as wheel as on the rate of shear, exhibit;
a) Rheopexy
b) Thixotropy
c) Viscoelasticity
d) Plasticity
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3: Fluids that do not abbey Newton’s law are described as;
a) Time dependent non-Newtonian fluids
b) Time independent non-Newtonian fluids
c) Newtonian fluids
d) Both a & b
e) None of them
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4: Elastic deformation is described by;
a) Hook’s law
b) Newton’s law
c) Empirical power law
d) Stock’s law
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5: The ratio of relaxation time of a material to the time scale of a deformation is called;
a) Reynolds number
b) Weissenberg number
c) Deborah number
d) Mass number
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6: If neither the deformation strain, nor its derivative with time (rate) follows the applied stress then the material is:
a) Elastic
b) Solid
c) Viscoelastic
d) Fluid
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Answers to Multiple Choice Questions (MCQs) from Rheology in Pharmaceutics
1: The principle method for measuring viscosity is;Answer: - d) All of the above
2: Materials whose consistency depends on the duration of shear as wheel as on the rate of shear, exhibit;
Answer:- b) Thixotropy
3: Fluids that do not abbey Newton’s law are described as;
Answer:- d) Both a & b
4: Elastic deformation is described by;
Answer:- a) Hook’s law
5: The ratio of relaxation time of a material to the time scale of a deformation is called;
Answer:- c) Deborah number
6: If neither the deformation strain, nor its derivative with time (rate) follows the applied stress then the material is:
Answer:- c) Viscoelastic
(These MCQs are helpful for the preparation of Pharmacy Exams)
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