MCQOPTIONS
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MCQOPTIONS
This section includes 925 Mcqs, each offering curated multiple-choice questions to sharpen your GPAT knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Dry Gum Method is also known as |
| A. | Continental method. |
| B. | English method |
| C. | Bottle method |
| D. | Forbe's method |
| Answer» B. English method | |
| 52. |
A second order reaction follows pseudo-first order reaction, when the concentrations of: |
| A. | two reactants are high |
| B. | two reactants are low |
| C. | one reactant is far higher than the other reactant. |
| D. | two reactants are equal |
| Answer» D. two reactants are equal | |
| 53. |
Flocculated suspensions exhibit the flow of a type: |
| A. | Dilatant |
| B. | Newtonian |
| C. | Plastic |
| D. | Pseudoplastic |
| Answer» D. Pseudoplastic | |
| 54. |
In flocculated suspension, the rate of sedimentation is |
| A. | Low |
| B. | More |
| C. | Zero |
| D. | 50% |
| Answer» C. Zero | |
| 55. |
The ratio of the void volume to the bulk volume of the packing is called as the.................... |
| A. | Tap density |
| B. | Bulk density |
| C. | Followability |
| D. | Porosity |
| Answer» E. | |
| 56. |
Fisher subsieve sizer is used to determine the surface area of the powder. The surface area ismeasured based on the change in: |
| A. | light transmission of gas that reaches the detector |
| B. | pressure across the compacted powder |
| C. | thermal conductivity of gas across the powdered pack |
| D. | weight of powder when air is passed through the powdered pack |
| Answer» E. | |
| 57. |
In a chemical reaction, the rate constant is independent of the initial concentration. Which one ofthem is the order? |
| A. | first |
| B. | second |
| C. | third |
| D. | zero |
| Answer» E. | |
| 58. |
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» D. temperature can be maintained uniformly | |
| 59. |
Andreason apparatus consist of |
| A. | Reference electrode |
| B. | Pipette |
| C. | Glass electrode |
| D. | Hydrogen electrode |
| Answer» C. Glass electrode | |
| 60. |
When cumulative percent frequency on a probability scale is plotted against logarithm of the particlesize, 50 percent on the probability scale gives the powder particle diameter of: |
| A. | arithmetic mean |
| B. | arithmetic mode |
| C. | geometric mean |
| D. | harmonic mean |
| Answer» D. harmonic mean | |
| 61. |
Pseudoplastic flow are also known as |
| A. | shear thinning system |
| B. | shear thickening system |
| C. | Elastic deformation |
| D. | Plastic deformation |
| Answer» B. shear thickening system | |
| 62. |
Solubility of Drug can be improved by… |
| A. | Targeting drug to specific organ |
| B. | Addition of emulsifying agent |
| C. | Addition of thickening agent |
| D. | Addition of Surface active agent |
| Answer» E. | |
| 63. |
Thixotropic type of behavior is shown by the gel: |
| A. | bentonite |
| B. | pectin |
| C. | silica |
| D. | starch |
| Answer» B. pectin | |
| 64. |
Microemulsions contain globules of the size about ......... |
| A. | 10 micro meter |
| B. | 1 micro meter |
| C. | 0.1 micrometer |
| D. | 0.01 micrometer |
| Answer» E. | |
| 65. |
The drug molecule is degradate by exposure of light it affects substantial degradation of drug molecule this phenomenon is known as........... |
| A. | Photolytic degradation |
| B. | Chemical degradation |
| C. | Physical degradation |
| D. | None of the above |
| Answer» B. Chemical degradation | |
| 66. |
The phenomenon which involves separation of macromolecular solutions into two liquid layers iscalled as......... |
| A. | Liquid separation |
| B. | Coagulation |
| C. | Flocculation |
| D. | Coacervation |
| Answer» E. | |
| 67. |
For oral administration of a suspension to a patient, which one of the factors is the most important? |
| A. | acceptable color and odour |
| B. | polyumorphism |
| C. | specific surface area |
| D. | viscosity |
| Answer» B. polyumorphism | |
| 68. |
In psedoplastic flow as shear stress increases, shear rate............... |
| A. | Increases |
| B. | Increases but linear |
| C. | Increases but not linear |
| D. | Decreases |
| Answer» D. Decreases | |
| 69. |
Usually, the rate of a chemical reaction may be enhanced by: |
| A. | cooling the reaction mixture |
| B. | increasing the rate of stirring |
| C. | raising the temperature of the reaction mixture |
| D. | using stoichiometric quantities of each reactant |
| Answer» D. using stoichiometric quantities of each reactant | |
| 70. |
Microemulsion is NOT considered to be a true emulsion, because: |
| A. | appearance is transparent |
| B. | emulsifier is not used |
| C. | immiscible phase is absent |
| D. | internal phase is not spherical |
| Answer» D. internal phase is not spherical | |
| 71. |
In the formulation development of emulsions and suspensions, what type of diameter is important? |
| A. | length number |
| B. | projected |
| C. | sieve |
| D. | stokes |
| Answer» E. | |
| 72. |
Which of the following is/ are the theories of emulsification? |
| A. | Monomolecular adsorption theory |
| B. | Multimolecular adsorption theory |
| C. | Solid Particle Adsorption theory |
| D. | All of the above |
| Answer» E. | |
| 73. |
When an emulsion is exposed to ultra-violet radiations. If the continuous fluorescence is observedunder microscope, then it is_____________ type emulsion. |
| A. | w/o |
| B. | o/w |
| C. | microemulsion |
| D. | Nano emulsion |
| Answer» B. o/w | |
| 74. |
…....technique is utilized for estimation of surface diameter ds. |
| A. | Air permeability |
| B. | Vacuum |
| C. | Filtration |
| D. | Weighing |
| Answer» B. Vacuum | |
| 75. |
Which-one of the following orders have abundant applications in biological processes? |
| A. | first |
| B. | second |
| C. | third |
| D. | zero |
| Answer» B. second | |
| 76. |
The comparatively fast sedimentation rate of the dispersed phase produced by means of gravity orother forces this is characteristic of.............. |
| A. | Colloidal dispersion |
| B. | Coarse dispersion |
| C. | Both of the above |
| D. | None of the above |
| Answer» C. Both of the above | |
| 77. |
In the stability of emulsion, which instability step is prevented by emulsifiers?: |
| A. | breaking |
| B. | coalescence |
| C. | creaming |
| D. | flocculation |
| Answer» C. creaming | |
| 78. |
If the gold number is less then the protective action will be |
| A. | more |
| B. | Less |
| C. | Half |
| D. | Zero |
| Answer» B. Less | |
| 79. |
The HLB range of an emulsifier employed in the preparation of water-in-oil emulsion is: |
| A. | 3 to 6 |
| B. | 7 to 12 |
| C. | 13 to 15 |
| D. | more than 15 |
| Answer» B. 7 to 12 | |
| 80. |
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» D. Michaelis Menten equation | |
| 81. |
In exothermic Reaction, if we increase the temperature in the exothermic reaction the rate of reactionwill......... |
| A. | Increases |
| B. | Decrease |
| C. | Remains constant |
| D. | None of the above |
| Answer» C. Remains constant | |
| 82. |
The suspensions having particle size................... are categorized as coarse suspension. |
| A. | Greater than ~1 mm |
| B. | Greater than-10 mm |
| C. | Both of the above |
| D. | None of the above |
| Answer» B. Greater than-10 mm | |
| 83. |
Which one of the following physical Property is NOT a rheological property? |
| A. | body and slip |
| B. | spreadability |
| C. | surface tension |
| D. | viscosity |
| Answer» D. viscosity | |
| 84. |
Which of the following factors affect the rate of reaction? |
| A. | Temperature |
| B. | Catalysis |
| C. | Dielectric constant |
| D. | All of the above |
| Answer» E. | |
| 85. |
One of the following is NOT a one point viscometer, but can be used for the same purpose. Pick theviscometer of this type. |
| A. | cup and bob |
| B. | falling sphere |
| C. | Ostwald |
| D. | rolling ball |
| Answer» B. falling sphere | |
| 86. |
In antithixotropy, the down-curve is frequently positioned to: (with respect to up-curve): |
| A. | left. |
| B. | origin |
| C. | right |
| D. | superimposible |
| Answer» D. superimposible | |
| 87. |
Chemical kinetics is the study of the |
| A. | rate of chemical reactions |
| B. | particle size |
| C. | rheological property |
| D. | interfacial tension |
| Answer» B. particle size | |
| 88. |
For a flocculated suspension the degree of flocculation is observed to be one. The sedimentationvolume is also 1 (one). These values, respectively, indicate the limits: |
| A. | lower and lower |
| B. | lower and upper |
| C. | upper and lower |
| D. | upper and upper |
| Answer» C. upper and lower | |
| 89. |
Which of the following expression is correct for the determination of shelf life for a first orderdecomposition? |
| A. | t1/2 = 0.105/k |
| B. | t90 = 0.693/k |
| C. | t1/2 = 0.693/k |
| D. | t90 = 0.105/k |
| Answer» E. | |
| 90. |
Which of the following is identification test for emulsion |
| A. | Dilution test |
| B. | Cobalt Chloride Test |
| C. | Conductivity Test |
| D. | All of the above |
| Answer» E. | |
| 91. |
Which one of the following colloids is difficult to prepare? |
| A. | association |
| B. | hydrophilic |
| C. | hydrophobic |
| D. | lyophilic |
| Answer» D. lyophilic | |
| 92. |
When the size of particle is less than 1nm then it is called |
| A. | Molecular dispersions |
| B. | Colloidal dispersions |
| C. | Suspension |
| D. | Emulsion |
| Answer» B. Colloidal dispersions | |
| 93. |
The unit of particle size used is in………… |
| A. | Kilometer (km) |
| B. | Centimeter (Cm) |
| C. | Millimeter (mm) |
| D. | Micrometer (µm) |
| Answer» E. | |
| 94. |
Sulphur sol is an example of colloidal type: |
| A. | Association |
| B. | hydrophilic |
| C. | lyophilic |
| D. | lyophobic |
| Answer» E. | |
| 95. |
Hausner Ratio is |
| A. | Tapped density / Bulk density |
| B. | Bulk density / Tapped density |
| C. | bulk volume / void volume |
| D. | void volume / bulk volume |
| Answer» B. Bulk density / Tapped density | |
| 96. |
Emulsions are defined as thermodynamically unstable systems. The events that follow sequentiallytowards instability are: |
| A. | coalescence, breaking, creaming and flocculation |
| B. | coalescence, flocculation, creaming and breaking |
| C. | flocculation, creaming, breaking and coalescence |
| D. | flocculation, creaming, coalescence and breaking |
| Answer» E. | |
| 97. |
On a product, the label states ‘protect from light’. What type of decomposition does the productundergo? |
| A. | carboxylation |
| B. | decarboxylation |
| C. | hydrolysis |
| D. | oxidation |
| Answer» E. | |
| 98. |
The characteristic of a lyophobic sol is that: |
| A. | electrolytes in small amounts induce stabilization |
| B. | it is reversible |
| C. | particles have high electric charge |
| D. | viscosity increases by the presence of particles |
| Answer» D. viscosity increases by the presence of particles | |
| 99. |
The main function of an emulsifier in the preparation of an emulsion is to: |
| A. | develop a condensed membrane layer film |
| B. | increase the repulsions between globules coming together |
| C. | increase the surface free energy |
| D. | reduce the interfacial tension |
| Answer» B. increase the repulsions between globules coming together | |
| 100. |
The HLB system is used classify |
| A. | Flavours |
| B. | Colours |
| C. | Surfactants |
| D. | Perfumes |
| Answer» D. Perfumes | |