Pharmacy Practice MCQ, in this article we will solve, Practice MCQ under subject physical pharmaceutics II. Read following article for your reference.
Rheology: Newtonian Systems, Law Of Flow, Kinematic Viscosity, Effect Of Temperature » PHARMACAREERS
- What is rheology?
- a) The study of the flow and deformation of matter
- b) The study of chemical reactions
- c) The study of biological systems
- d) The study of physical properties of solids
- What is a Newtonian fluid?
- a) A fluid whose viscosity changes with shear rate
- b) A fluid whose viscosity remains constant regardless of shear rate
- c) A fluid that does not flow
- d) A fluid that flows only under high pressure
- What is Newton’s law of viscosity?
- a) The relationship between shear stress and shear rate
- b) The relationship between temperature and viscosity
- c) The relationship between density and viscosity
- d) The relationship between pressure and viscosity
- What is dynamic viscosity?
- a) The ratio of dynamic viscosity to density
- b) The resistance of a fluid to flow
- c) The measure of a fluid’s ability to conduct electricity
- d) The measure of a fluid’s ability to dissolve substances
- What is kinematic viscosity?
- a) The ratio of dynamic viscosity to density
- b) The ratio of density to dynamic viscosity
- c) The measure of a fluid’s resistance to flow under gravity
- d) The measure of a fluid’s ability to conduct heat
- How does temperature affect the viscosity of a liquid?
- a) Viscosity increases with increasing temperature
- b) Viscosity decreases with increasing temperature
- c) Temperature has no effect on viscosity
- d) Viscosity remains constant with temperature changes
- What is the unit of dynamic viscosity?
- a) Pascal-second (Pa·s)
- b) Newton-meter (N·m)
- c) Joule-second (J·s)
- d) Watt-second (W·s)
- What is the unit of kinematic viscosity?
- a) Pascal-second (Pa·s)
- b) Newton-meter (N·m)
- c) Joule-second (J·s)
- d) Stoke (St)
- Which of the following is an example of a Newtonian fluid?
- a) Honey
- b) Ketchup
- c) Water
- d) Toothpaste
- What is the effect of increasing temperature on the viscosity of a Newtonian fluid?
- a) Viscosity increases
- b) Viscosity decreases
- c) Viscosity remains constant
- d) Viscosity becomes zero
- What is the significance of kinematic viscosity in pharmaceutical engineering?
- a) It helps in determining the chemical composition of a fluid
- b) It helps in comparing the flow behavior of fluids with different densities
- c) It helps in measuring the electrical conductivity of a fluid
- d) It helps in determining the thermal stability of a fluid
- What is the relationship between shear stress and shear rate in a Newtonian fluid?
- a) Linear
- b) Exponential
- c) Logarithmic
- d) Inverse
- What is the effect of adding a coagulant to a Newtonian fluid?
- a) It increases the viscosity
- b) It decreases the viscosity
- c) It has no effect on viscosity
- d) It changes the fluid to a non-Newtonian fluid
- What is the primary use of rheological measurements in pharmaceutical formulations?
- a) To determine the chemical composition
- b) To optimize product performance and stability
- c) To measure the electrical conductivity
- d) To determine the thermal stability
- What is the effect of increasing temperature on the flow properties of a non-Newtonian fluid?
- a) Flow properties remain constant
- b) Flow properties become unpredictable
- c) Flow properties may change depending on the type of non-Newtonian fluid
- d) Flow properties always decrease
- What is the significance of the law of flow in pharmaceutical engineering?
- a) It helps in determining the chemical composition of formulations
- b) It helps in optimizing the flow and deformation properties of formulations
- c) It helps in measuring the electrical conductivity of formulations
- d) It helps in determining the thermal stability of formulations
- What is the effect of increasing temperature on the viscosity of a non-Newtonian fluid?
- a) Viscosity increases
- b) Viscosity decreases
- c) Viscosity remains constant
- d) Viscosity becomes zero
- What is the primary characteristic of a Newtonian fluid?
- a) Its viscosity changes with shear rate
- b) Its viscosity remains constant regardless of shear rate
- c) Its viscosity increases with temperature
- d) Its viscosity decreases with temperature
- What is the primary characteristic of a non-Newtonian fluid?
- a) Its viscosity remains constant regardless of shear rate
- b) Its viscosity changes with shear rate
- c) Its viscosity increases with temperature
- d) Its viscosity decreases with temperature
- What is the effect of increasing temperature on the viscosity of a Newtonian fluid?
- a) Viscosity increases
- b) Viscosity decreases
- c) Viscosity remains constant
- d) Viscosity becomes zero
- What is the primary use of rheological measurements in pharmaceutical formulations?
- a) To determine the chemical composition
- b) To optimize product performance and stability
- c) To measure the electrical conductivity
- d) To determine the thermal stability
- What is the effect of increasing temperature on the flow properties of a non-Newtonian fluid?
- a) Flow properties remain constant
- b) Flow properties become unpredictable
- c) Flow properties may change depending on the type of non-Newtonian fluid
- d) Flow properties always decrease
- What is the significance of the law of flow in pharmaceutical engineering?
- a) It helps in determining the chemical composition of formulations
- b) It helps in optimizing the flow and deformation properties of formulations
- c) It helps in measuring the electrical conductivity of formulations
- d) It helps in determining the thermal stability of formulations
- What is the effect of increasing temperature on the viscosity of a non-Newtonian fluid?
- a) Viscosity increases
- b) Viscosity decreases
- c) Viscosity remains constant
- d) Viscosity becomes
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