RHEOLOGY
TOP 10 MCQ
1. Based on the rheological behavior of fluid, all of the following show time-independent property, except [GPAT-2024]
(a) Antithixotropy
(b) Plastic
(c) Non-Newtonian
(d) Pseudoplastic
2. Which of the following type of viscometer is used for the measurement of viscosity of a Newtonian fluid [GPAT-2024]
(a) Ostwald viscometer
(b) Brookfield viscometer
(c) Cup and bob viscometer
(d) Pycnometer
3. The difference in velocity between two planes of liquids separated by infinitesimal distance is called [GPAT-2023 SHIFT-I]
(a) Rate of shear
(b) Rate of flow
(c) Rate of force
(d) Shearing stress
4. Suspensions containing a high percentage (about 50% or greater) of small deflocculated particles would show which flow property [GPAT-2023 SHIFT-I]
(a) Plastic flow
(b) Dilatant flow
(c) Newtonian flow
(d) Pseudoplastic flow
5. In a mechanical model of a viscoelastic material, showing both viscosity of liquid state and elasticity of solid state combined in series is termed as [GPAT-2023 SHIFT-II]
(a) Voigt element
(b) Creep element
(c) Maxwell element
(d) Retardation element
6. The system volume is increased when sheared is called [GPAT-2021]
(a) Dilatant flow
(b) Newtonian flow
(c) Plastic flo
(d) Pseudoplastic flow
7. When a solid forms a gel more readily when gently shaken or otherwise sheared than when allowed to form gel at rest, the phenomenon is known as [GPAT-2020]
(a) Thixotropy
(b) Rheopexy
(c) Negative rheopexy
(d) Anti-thixotropy
8. Centistoke is the CGS unit for the following property [GPAT-2020]
(a) Surface tension
(b) Coefficient of viscosity
(c) Fluidity
(d) Kinematic viscosity
9. The temperature dependence and theory of viscosity is expressed by the following [GPAT-2020]
(a) Stern-Volmer equation
(b) Arrhenius equation of chemical kinetics
(c) Higuchi equation
(d) Gibbs equation
10. Which one of the following viscometers can be used for characterizing Non-Newtonian system [GPAT-2019]
(a) Falling sphere viscometer
(b) Cup and bob viscometer
(c) Capillary viscometer
(d) Hoppler viscometer
ANSWER KEY
| 1-a | 2-a | 3-a | 4-b | 5-c | 6-a | 7-b | 8-d | 9-b | 10-b |
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