## Question

###### 1)i) Contrast between each pair of the following: Viscosity and kinematic viscosity b. Fluidity and mobility Single point and multiple point viscometers Thixotropy and Anti-thixotropy Class I & I productsii)Draw the rheogram of each of the following fluid: a. Newtonian liquid b. Plastic liquid Pseudoplastic liquid d. Dilatant liquid Pseudoplastic liquid with thixotropic behaviouriii)Explain the principle underlying the following equipment: Falling-sphere viscometer Searle-type cup-and-bob vi

1)i) Contrast between each pair of the following: Viscosity and kinematic viscosity b. Fluidity and mobility Single point and multiple point viscometers Thixotropy and Anti-thixotropy Class I & I products ii) Draw the rheogram of each of the following fluid: a. Newtonian liquid b. Plastic liquid Pseudoplastic liquid d. Dilatant liquid Pseudoplastic liquid with thixotropic behaviour iii) Explain the principle underlying the following equipment: Falling-sphere viscometer Searle-type cup-and-bob viscometer iv) Mention each of the following: Advantages of cone -and-plate viscometer b. Applications of thixotropy in pharmaceutical dosage forms v) Explain with a pharmaceutical example each of the following: Pseudoplastic flow b. Dilatant flow

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