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Rheology Quiz

Total questions: 51

Worksheet time: 51mins

Name
Class
Date
1.

Flocculated suspensions exhibit the flow of a type:

a)

Dilatant

b)

Newtonian

c)

Plastic

d)

Pseudoplastic

2.

A limitation that is NOT related to the falling sphere viscometer:

a)

Applicable to only less viscous liquids

b)

Large volume of sample is required

c)

Needs the sample to be transparent

d)

Plug flow

3.

In general, Newtonian fluids are expressed in terms of viscosity. A corresponding expression in non- Newtonian fluids (in terms of viscosity) is:

a)

Apparent

b)

Dynamic

c)

Intrinsic

d)

Kinematic

4.

One of the following is NOT a one point viscometer but can be used for the same purpose. Pick the viscometer of this type.

a)

Cup and bob

b)

Falling sphere

c)

Ostwald

d)

Rolling ball

5.

Fluidity is a term associated with Newtonian fluids. An equivalent term in plastic flow fluids is:

a)

Apparent viscosity

b)

Flexibility

c)

Mobility

d)

Plastic viscosity

6.

Dilatant flow is characterized as a reverse phenomenon of:

a)

Newtonian flow

b)

Plastic flow

c)

Pseudoplastic flow

d)

Rheopexy

7.

Deflocculated suspension with high concentration of the dispersed solids exhibits the flow of type:

a)

dilatant

b)

Newtonian

c)

plastic

d)

pseudoplastic

8.

In antithixotropy, the down-curve is frequently positioned to: (with respect to up-curve):

a)

left

b)

origin

c)

right

d)

superimposable

9.

At equilibrium, the thixotropic behavior of a pseudoplastic system exhibit the state of:

a)

gel

b)

paste

c)

sol

d)

wax

10.

Which one of the following physical Property is NOT a rheological property?

a)

body and slip

b)

spreadability

c)

surface tension

d)

viscosity

11.

The pseudoplastic flow behaviour can be explained by:

a)

apparent viscosity

b)

area of hysteresis loop

c)

hysteresis loop

d)

yield value

12.

Brookfield viscometer is an example of type:

a)

cone and plate

b)

extrusion

c)

rotation sphere

d)

rotating spindle

13.

High viscosity indicates one of the following relationships in a system. Which is relevant?

a)

free from intermolecular interactions

b)

intermolecular attractions are stronger

c)

intermolecular attractions are weaker

d)

shape of the molecules is spherical

14.

An emulsion of o/w type has the viscosity:

a)

greater than that of the internal phase

b)

greater than that of the vehicle

c)

less than that of the internal phase

d)

less than that of the vehicle

15.

Creep testing is applied to analyse the viscoelastic property of:

a)

emulsions

b)

lotions

c)

ointments

d)

suspensions

16.

The system that undergoes gel-to-sol transformation is known as:

a)

elastic

b)

permanent deformation

c)

shear thickening

d)

shear thinning

17.

The type of viscosity specified in I.P. (Ostwald viscometer) is:

a)

absolute viscosity

b)

dynamic viscosity

c)

kinematic viscosity

d)

viscosity coefficient

18.

After giving the I. M. injection of procaine penicillin G, the process of forming a depot in the muscle is due to:

a)

high yield value

b)

low consistency

c)

low yield value

d)

rapid thixotropic recovery

19.

Pick the reason for the calibration of an instrument.

a)

most of the instruments are not reliable

b)

to calculate the constant for the instrument

c)

to calculate the relative property

d)

to correct the errors in the working of an instrument

20.

Plug flow in NOT observed in cone and plate viscometer. The reason is:

a)

cleaning and filling of sample is easy

b)

rate of shear is independent of the radius

c)

shear can be maintained uniformly

d)

temperature can be maintained uniformly

21.

The term rheology was invented by

a)

Bingham and Crawford

b)

Newton

c)

Michaelis and Menten

d)

Watson and Crick

22.

According to the Newton's law of viscosity, "The shear stress in flowing fluid is _______ to the rate of shear".

a)

Inversely proportional

b)

directly proportional

c)

Square root

d)

Perpendicular

23.

The unit of viscosity is

a)

Newton sec m

b)

Newton sec² m²

c)

Newton sec m

d)

Newton

24.

Fluidity is

a)

reciprocal of density

b)

reciprocal of surface tension

c)

reciprocal of volume

d)

reciprocal of viscosity

25.

Kinematic viscosity is the ratio of dynamic viscosity to the

a)

density of the fluid

b)

plastic viscosity

c)

volume of liquid to flow

d)

specific gravity of fluid

26.

The effect of temperature on the viscosity (n) of a liquid is expressed by

a)

Stoke's Law

b)

Newton's law

c)

Arrhenius equation

d)

Michaelis Menten equation

27.

The reciprocal of mobility is known as

a)

Apparent viscosity

b)

plastic viscosity

c)

Dynamic viscosity

d)

Kinematic viscosity

28.

Pseudoplastic flow are also known as

a)

shear thinning system

b)

shear thickening system

c)

Elastic deformation

d)

Plastic deformation

29.

Dilatant flow is also known as

a)

shear thinning system

b)

shear thickening system

c)

Elastic deformation

d)

Plastic deformation

30.

Negative Thixotropy is a phenomenon in which there is

a)

increase in viscosity on down curve

b)

increase in viscosity on up curve

c)

decrease in viscosity on down curve

d)

decrease in viscosity on up curve

31.

Which of the following is not a viscometer

a)

Capillary

b)

Falling Sphere

c)

Rotational

d)

Drop weight

32.

Which of the following viscometer is also called suspended-level viscometer

a)

Ubbelohde viscometer

b)

Capillary viscometer

c)

Ostwald viscometer

d)

Cone and plate viscometer

33.

Pseudoplastic flow is generally exhibited by

a)

Jellies

b)

Suspension

c)

Lotion

d)

Colloids

34.

Concentrated solid suspension generally exhibit

a)

Dilatant flow

b)

Pseudoplastic flow

c)

Plastic flow

d)

All of the above

35.

Rheology is the

a)

Science or study of the flow of a material.

b)

Study of particle size

c)

Study of formation of colloids

d)

Study of formation of complex

36.

The change in velocity between two planes of liquid which is separated by distance is called

a)

Rate of shear

b)

Shearing stress

c)

Strain

d)

Yield value

37.

Which of the following viscometer is based on the principle of Stokes' Law.

a)

Cup and Bob viscometer

b)

Falling Sphere Viscometer

c)

Cone and plate viscometer

d)

Rotational viscometer

38.

The resistance of a liquid to flow is termed as

a)

Viscosity

b)

Density

c)

Interfacial tension

d)

Surface tension

39.

A shear stress-shear rate relationship is generally explained in the form of curve i.e. or.........

a)

Rheogram

b)

Consistency curve

c)

Both of the above

d)

None of the above

40.

The cgs physical unit for kinematic viscosity is

a)

Stokes (St)

b)

Pascale (PS)

c)

Newton

d)

None of the above

41.

As the temperature increases, the viscosity of liquid

a)

Decreases

b)

Increases

c)

Sustainly increases

d)

Remains constant

42.

The curve for a pseudo plastic material rheogram

a)

starts at the origin

b)

starts at the top

c)

both of the above

d)

none of the above

43.

In pseudoplastic flow as shear stress increases, shear rate................

a)

Increases

b)

Increases but linear

c)

Increases but not linear

d)

Decreases

44.

Dilatant materials are frequently called as..................

a)

strain-thinning systems

b)

shear-thickening systems

c)

shear-thinning systems

d)

strain-thinning systems

45.

The Rheogram of thixotropic material determined by

a)

Duration through which sample is exposed to any one shear rate.

b)

Rate at which shear increased or decreased.

c)

Both of the above

d)

None of the above

46.

……………… is the isothermal and moderately slow recovery on standing of material of which stability lost owing to shearing.

a)

Thermochemistry

b)

Viscosity

c)

Entiotropy

d)

Thixotropy

47.

……………… is the alteration in the shape and the size of a body owing to applied external forces and internal forces

a)

Deformation

b)

Formation

c)

Conjugation

d)

None of the above

48.

……………. is the deformation in term of relative displacement of the particles comprising the body.

a)

Strain

b)

Stress

c)

Shear

d)

State

49.

Progressive, permanent deformation under constant load is called

a)

Creep

b)

Plastic deformation

c)

Elastic deformation

d)

Fragmentation

50.

The value of Poisson ratio ranges from

a)

0.1 to 0.5

b)

0.001 to 0.01

c)

1 to 5

d)

2 to 4

51.

The ratio of stress to strain is called

a)

Poisson ratio

b)

Young modulus

c)

Shear strain

d)

Elastic modulus

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