**Multiple Choice Questions (MCQs) from Rheology in Pharmaceutics**

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**

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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