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Rheology in Pharmacy

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Questions and Answers

What is the characteristic of a pseudoplastic substance?

Its viscosity remains constant with increasing rate of shear

Its viscosity increases with increasing rate of shear

Its viscosity is independent of the rate of shear

Its viscosity decreases with increasing rate of shear (correct)

What is the unit of viscosity equivalent to 100 centipoise?

Stokes

Centistokes

Poise (correct)

Poiseuille

Which of the following materials exhibits dilatant flow?

Methylcellulose

Sodium Alginate

Corn Starch (correct)

Gum Tragacanth

What is the purpose of a capillary viscometer?

To determine the viscosity of a fluid Signup and view all the answers

What is the characteristic of a fluid with high viscosity?

It flows slowly Signup and view all the answers

What does the term 'rheology' literally mean?

Flow and deformation of materials Signup and view all the answers

What is the unit of absolute viscosity?

Poise (p) Signup and view all the answers

According to Newton's law of flow, what is the relationship between the viscosity of a liquid and the force per unit area required to produce a certain rate of shear?

The higher the viscosity, the greater the force per unit area required Signup and view all the answers

What is the characteristic of a non-Newtonian fluid?

Its flow properties are not described by a single constant value of viscosity Signup and view all the answers

What is the type of flow where the flow curve does not pass through the origin?

Plastic flow Signup and view all the answers

What are the three classes of non-Newtonian flow?

Pseudoplastic, Dilatant, and Plastic flow Signup and view all the answers

Rheology in Pharmacy

Choose a study mode

Podcast

Questions and Answers

What is the characteristic of a pseudoplastic substance?

What is the unit of viscosity equivalent to 100 centipoise?

Which of the following materials exhibits dilatant flow?

What is the purpose of a capillary viscometer?

What is the characteristic of a fluid with high viscosity?

What does the term 'rheology' literally mean?

What is the unit of absolute viscosity?

According to Newton's law of flow, what is the relationship between the viscosity of a liquid and the force per unit area required to produce a certain rate of shear?

What is the characteristic of a non-Newtonian fluid?

What is the type of flow where the flow curve does not pass through the origin?

What are the three classes of non-Newtonian flow?

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