McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Pharmacy (B. Pharma) , Pharmacy .
Chapters
| 51. |
A .......... is a mixture in which one substance of microscopically dispersed insoluble particles is suspended through another substance. |
| A. | Suspension |
| B. | Colloid |
| C. | Emulsion |
| D. | None of the above |
| Answer» A. Suspension | |
| 52. |
Few colloids are translucent because of the .. |
| A. | Tyndall effect |
| B. | Splitting effect |
| C. | Scattering |
| D. | None of the above |
| Answer» A. Tyndall effect | |
| 53. |
The comparatively fast sedimentation rate of the dispersed phase produced by means of gravity or other forces this is characteristic of.............. |
| A. | Colloidal dispersion |
| B. | Coarse dispersion |
| C. | Both of the above |
| D. | None of the above |
| Answer» B. Coarse dispersion | |
| 54. |
The molecule in the molecular dispersion phase have size............. |
| A. | Less than 10 nm |
| B. | More than 1 nm |
| C. | Less than 1 nm |
| D. | More than 10 nm |
| Answer» C. Less than 1 nm | |
| 55. |
The .......... colloids have strong attraction towards solvents. |
| A. | Lyophilic |
| B. | Lyophobic |
| C. | Associated |
| D. | None of the above |
| Answer» A. Lyophilic | |
| 56. |
.......... is the method accountable for the development of stable dispersion of colloidal particles in dispersion medium. |
| A. | Coacervation |
| B. | Peptization |
| C. | Flocculation |
| D. | Coagulation |
| Answer» B. Peptization | |
| 57. |
The phenomenon which involves separation of macromolecular solutions into two liquid layers is called as......... |
| A. | Liquid separation |
| B. | Coagulation |
| C. | Flocculation |
| D. | Coacervation |
| Answer» D. Coacervation | |
| 58. |
…..is directly proportional to the molecular weight of lyophilic colloid. |
| A. | Solubility |
| B. | Turbidity |
| C. | Density |
| D. | None of the above |
| Answer» B. Turbidity | |
| 59. |
Flocculated suspensions exhibit the flow of a type: |
| A. | Dilatant |
| B. | Newtonian |
| C. | Plastic |
| D. | Pseudoplastic |
| Answer» C. Plastic | |
| 60. |
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 |
| Answer» D. Plug flow | |
| 61. |
In general, Newtonian fluids are expressed in terms of viscosity. A corresponding expression in nonNewtonian fluids (in terms of viscosity) is: |
| A. | apparent |
| B. | dynamic |
| C. | intrinsic |
| D. | kinematic |
| Answer» A. apparent | |
| 62. |
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 |
| Answer» A. cup and bob | |
| 63. |
Fluidity is a term associated with newtoniam fluids. An equivalent term in plastic flow fluids is: |
| A. | apparent viscosity |
| B. | flexibility |
| C. | mobility |
| D. | plastic viscosity |
| Answer» C. mobility | |
| 64. |
Dilatant flow is characterized as a reverse phenomenon of: |
| A. | newtoniam flow |
| B. | plastic flow |
| C. | pseudoplastic flow |
| D. | rheopexy |
| Answer» C. pseudoplastic flow | |
| 65. |
Deflocculated suspension with high concentration of the dispersed solids exhibits the flow of type: |
| A. | dilatant |
| B. | newtoniam |
| C. | plastic |
| D. | pseudoplastic |
| Answer» A. dilatant | |
| 66. |
In antithixotropy, the down-curve is frequently positioned to: (with respect to up-curve): |
| A. | left. |
| B. | origin |
| C. | right |
| D. | superimposible |
| Answer» C. right | |
| 67. |
At equilibrium, the thixotropic behavior of a pseudoplastic system exhibit the state of: |
| A. | gel |
| B. | paste |
| C. | sol |
| D. | wax |
| Answer» C. sol | |
| 68. |
Which one of the following physical Property is NOT a rheological property? |
| A. | body and slip |
| B. | spreadability |
| C. | surface tension |
| D. | viscosity |
| Answer» C. surface tension | |
| 69. |
The pseudoplastic flow behavior can be explained by: |
| A. | apparent viscosity |
| B. | area of hysteresis loop |
| C. | hysteresis loop |
| D. | yield value |
| Answer» A. apparent viscosity | |
| 70. |
Brookfield viscometer is an example of type: |
| A. | cone and plate |
| B. | extrusion |
| C. | rotation sphere |
| D. | rotating spindle |
| Answer» D. rotating spindle | |
| 71. |
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 |
| Answer» B. intermolecular attractions are stronger | |
| 72. |
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 |
| Answer» A. greater than that of the internal phase | |
| 73. |
Creep testing is applied to analyse the viscoelastic property of: |
| A. | emulsions |
| B. | lotions |
| C. | ointments |
| D. | suspensions |
| Answer» C. ointments | |
| 74. |
The system that undergoes gel-to-sol transformation is known as: |
| A. | elastic |
| B. | permanent deformation |
| C. | shear thickening |
| D. | shear thinning |
| Answer» D. shear thinning | |
| 75. |
The type of viscosity specified in I.P. (Ostwald viscometer) is: |
| A. | absolute viscosity |
| B. | dynamic viscosity |
| C. | kinematic viscosity |
| D. | viscosity coefficient |
| Answer» C. kinematic viscosity | |
| 76. |
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 |
| Answer» D. rapid thixotropic recovery | |
| 77. |
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 |
| Answer» D. to correct the errors in the working of an instrument | |
| 78. |
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 |
| Answer» C. shear can be maintained uniformly | |
| 79. |
The term rheology was invented by |
| A. | Bingham and Crawford |
| B. | Newton |
| C. | Michaelis and Menten |
| D. | Watson and Crick |
| Answer» A. Bingham and Crawford | |
| 80. |
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 |
| Answer» B. directly proportional | |
| 81. |
The unit of viscosity is |
| A. | Newton sec m-2 |
| B. | Newton sec2 m2 |
| C. | Newton sec-1 m-1 |
| D. | Newton |
| Answer» A. Newton sec m-2 | |
| 82. |
Fluidity is |
| A. | reciprocal of density |
| B. | reciprocal of surface tension |
| C. | reciprocal of volume |
| D. | reciprocal of viscosity |
| Answer» D. reciprocal of viscosity | |
| 83. |
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 |
| Answer» A. density of the fluid | |
| 84. |
The effect of temperature on the viscosity (η) of a liquid is expressed by |
| A. | Stoke's Law |
| B. | Newton's law |
| C. | Arrhenius equation |
| D. | Michaelis Menten equation |
| Answer» C. Arrhenius equation | |
| 85. |
The reciprocal of mobility is known as |
| A. | Apparent viscosity |
| B. | plastic viscosity |
| C. | Dynamic viscosity |
| D. | Kinematic viscosity |
| Answer» B. plastic viscosity | |
| 86. |
Pseudoplastic flow are also known as |
| A. | shear thinning system |
| B. | shear thickening system |
| C. | Elastic deformation |
| D. | Plastic deformation |
| Answer» A. shear thinning system | |
| 87. |
Dilatant flow is also known as |
| A. | shear thinning system |
| B. | shear thickening system |
| C. | Elastic deformation |
| D. | Plastic deformation |
| Answer» B. shear thickening system | |
| 88. |
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 |
| Answer» A. increase in viscosity on down curve | |
| 89. |
Which of the following is not a viscometers |
| A. | Capillary |
| B. | Falling Sphere |
| C. | Rotational |
| D. | Drop weight |
| Answer» D. Drop weight | |
| 90. |
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 |
| Answer» A. Ubbelohde viscometer | |
| 91. |
Pseudoplastic flow is generally exhibited by |
| A. | Jellies |
| B. | Suspension |
| C. | Lotion |
| D. | Colloids |
| Answer» A. Jellies | |
| 92. |
Concentrated solid suspension generally exhibit |
| A. | Dilatant flow |
| B. | Pseudoplastic flow |
| C. | Plastic flow |
| D. | All of the above |
| Answer» C. Plastic flow | |
| 93. |
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 |
| Answer» A. Science or study of the flow of a material. | |
| 94. |
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 |
| Answer» A. Rate of shear | |
| 95. |
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 |
| Answer» B. Falling Sphere Viscometer | |
| 96. |
The resistance of a liquid to flow is termed as |
| A. | Viscosity |
| B. | Density |
| C. | In ter facial tension |
| D. | Surface tension |
| Answer» A. Viscosity | |
| 97. |
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 |
| Answer» C. Both of the above | |
| 98. |
The cgs physical unit for kinematic viscosity is ............... |
| A. | Stokes (St) |
| B. | Pascale (PS) |
| C. | Newton |
| D. | None of the above |
| Answer» A. Stokes (St) | |
| 99. |
As the temperature increases, the viscosity of liquid............... |
| A. | Decreases |
| B. | Increases |
| C. | Sustainly increases |
| D. | Remains constant |
| Answer» A. Decreases | |
| 100. |
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 |
| Answer» A. starts at the origin | |
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