1. The working of Fluid energy mill is based on principle of
Correct : D. Both a & b
2. Size reduction is also known as:
Correct : A. Comminution
3. The bell crank lever arrangement is major part of which of the following………:
Correct : D. Bag filter
4. The hammer mill operates on the principle of:
Correct : A. Impact
5. Ball Mill operates at the speed of?
Correct : C. Optimum speed
6. Fluid Energy Mill works on the principle of:
Correct : A. Impact & Attrition
7. Fibrous drugs are milled by using:
Correct : A. Cutter Mill
8. Mills are not suitable for Friable (heat sensitive) materials?
Correct : D. All of the above
9. In Azeotropic distillation __________ remains low:
Correct : C. Relativity Volatility
10. In Vacuum Distillation, Substance boils at a/an:
Correct : C. temperature below its boiling point
11. In the fractionating column of fraction distillation, as we go higher in the column the…..?
Correct : A. Temperature becomes lower
12. Rate of evaporation is______:
Correct : A. directly proportional to temperature of liquid
13. Which of the following factors do not affect the rate of evaporation?
Correct : C. Depth of liquid
14. Which of the following is a characteristic of a horizontal tube evaporator?
Correct : A. Agitation is provided only by bubbles leaving the evaporator as vapor
15. The (emissivity) of a black body is:
Correct : A. 1
16. Lyophilization is also known as:
Correct : B. Freeze drying
17. Mean free path is associated with which type of distillation?
Correct : D. Fractional
18. Which one of the following rate is observed in mixing of solids?
Correct : A. First order law
19. Unit of the rate of heat transfer is
Correct : D. Watt
20. Which type of mixture is easily formed?
Correct : A. Positive
21. Mechanism not used in solid-solid Mixing:
Correct : D. Tumbling
22. Mechanism of mixing in sigma blade mixer:
Correct : C. Shearing
23. Mechanism of mixing in silverson mixer is:
Correct : D. Turbulent
24. Degree of mixing is also known as:
Correct : A. Degree of Homogeneity
25. __________ states that the rate of heat flow through a uniform material is proportional to the area and
temperature and inversely proportional to the length of the path of flow.
Correct : C. Fourier’s law
26. A body whose absorptivity is constant at all wavelengths of radiation, at a given temperature is
known as
Correct : B. Grey body
27. Which of the following is used for drying blood plasma:
Correct : B. Freeze drying
28. Which equipment is used for mixing of immiscible liquids?
Correct : C. Silverson Mixer
29. Which one of these drying techniques is used for drying antibiotics and plant extract?
Correct : B. Freeze dryer
30. ____________ method of distillation is used for the purification & separation of chemicals of low
vapor pressure
Correct : D. Molecular Distillation
31. Rectification is another name of:
Correct : A. Fractional distillation
32. In which dryer, hot air jets are used for drying purpose?
Correct : D. Fluidized Bed dryer
33. A black body is perfect
Correct : C. emitter and absorber
34. What are advantages of the spray drying process:
Correct : D. All of the above
35. What are physical factors affecting in the selection of the materials for the construction of
pharmaceutical plant:
Correct : D. All of the above
36. Which is not a non-ferrous metal?
Correct : C. Steel
37. Which is used as a placing to protect steel?
Correct : B. Chromium
38. For ease in size reduction, the material should be.
Correct : A. Hard, brittle
39. Which of the following factor does NOT affect the size reduction?
Correct : C. Viscosity
40. Product size achieved by Ball mill?
Correct : B. 20-200 mesh
41. Product size achieved by hammer mill is
Correct : A. 4-325 mesh
42. Product size achieved by Fluid energy Mill is
Correct : D. 1-30 microns
43. Which one is called coarse powder?
Correct : A. It is powder in which all the particles must pass through the sieve no. 10
44. Number of sieve is defined as?
Correct : A. This is the number of meshes in a length of 25.4 mm in each direction, parallel to the wires
45. Which of these is not a mechanism of size separation?
Correct : D. Compression
46. Heat transfer takes place according to
Correct : B. Second law of thermodynamics
47. Fourier law of heat conduction is based on the assumption that
Correct : C. Both (A) & (B)
48. Which of the following has maximum value of thermal conductivity?
Correct : A. Aluminum
49. Stefan Boltzmann law is applicable for heat transfer by
Correct : C. Radiation
50. The amount of radiation mainly depends on:
Correct : D. All of the above
51. The distilled water is collected in _________.
Correct : A. Receiver
52. Which of the following is not a step in process of distillation?
Correct : C. Precipitation
53. Calendria consists of no. of
Correct : C. Tubular surfaces
54. Source of heat in most of the evaporator:
Correct : B. Steam
55. Solar water heaters, solar cookers, microwave ovens, microwave cookers, sonicator baths etc., are
examples of which type transfer of heat mechanism?
Correct : B. Radiation
56. Following factor does NOT influence film coefficient:
Correct : C. pH of the liquid
57. When fluid is heated, the currents set up may cause mixing of fluid. Such heat transfer is known as:
Correct : B. Natural Convection
58. Which is NOT a Mode of Size Reduction?
Correct : C. Vaporization
59. Following is the example of hammer mill used in Pharmaceutical Industry:
Correct : A. Fitzpatrick comminuting machine (Fitz mill)
60. E = KR (Sn - Si) belongs to which law/Theory?
Correct : D. Rittinger’s Theory
61. Bond’s work Index is the work required to reduce a unit weight from a theoretical infinite size to 80%
passing ______µm.
Correct : B. 100
62. A powder, all the particles of which pass through sieve no. 44 is called?
Correct : B. Moderately fine powder
63. Herringbone screen recommends use of which type of material for separation?
Correct : C. Amorphous & crystalline materials
64. The main principle of Sieve shaker is:
Correct : C. Agitation
65. Sonic sifter is a variant/modification of which of the following equipment?
Correct : A. Sieve Shaker
66. Dorrclone is a separator used for separating solid suspended in a liquid such as water, is a
modification of which separator?
Correct : B. Cyclone separator
67. In mechanism of mixing, which is also known as Macromixing?
Correct : D. Convective mixing
68. Ideally in mixing equipment, powder should be filled:
Correct : C. Not more than 60%
69. In V-Cone Blender, if the speed is increased to high speed, what is observed?
Correct : A. Segregation
70. In ribbon blender, the mechanism of mixing follows
Correct : B. Shear
71. Ribbon blender is used to mix:
Correct : D. Both (b) or (c)
72. The biggest disadvantage of Sigma Blade mixer is:
Correct : C. Fixed speed
73. In comparison to Ribbon blender, Planetary Mixer has advantage of:
Correct : D. No Dead space
74. Aerosol preparations have which phase of mixing?
Correct : C. Liquid-Gas Mixing
75. Which of the following is not a part of mixing vessel?
Correct : C. Calendria
76. In silverson emulsifier, what is the only disadvantage?
Correct : B. Clogging of pores of the mesh
77. Hormones, antibiotics & enzymes are:
Correct : A. Heat-sensitive
78. Greater the surface area of the liquid, the evaporation will be:
Correct : B. Greater
79. The following Equipment is best for evaporating concentrated aqueous and thermostable liquors:
Correct : D. Evaporating Pan
80. Evaporator used to manufacture cascara extract, sugar, salt, caustic soda etc:
Correct : A. Vertical Tube evaporator
81. Vertical Tube evaporator is also known as:
Correct : C. Short Tube Evaporator
82. Entrainment separator is part of which evaporator?
Correct : A. Climbing Film Evaporator
83. When the feed is high viscosity, following evaporator should be used:
Correct : B. Falling Film evaporator
84. Evaporator working on basis of Pump or pressure:
Correct : D. Forced Circulation Evaporator
85. Which evaporator can be modified to Triple effect Evaporator/ Multiple effect evaporator?
Correct : A. Vertical Tube Evaporator
86. In distillation process is the separation of the components of a liquid mixture by process involving
vaporization and subsequent condensation at another place. What is the feed liquid called?
Correct : C. Distilland
87. In which process, concentrated liquid remains as final product?
Correct : B. Evaporation
88. Solution in which there is no change in the properties of the components other than dilution, when
they are mixed to form a solution is known as?
Correct : A. Ideal Solution
89. The correct equation/Expression of Dalton’s Law is:
Correct : B. P = pA + pB
90. Differential Distillation is also known as:
Correct : A. Simple Distillation
91. Which process is widely used to obtain Water for Injection/Purified Water?
Correct : C. Simple Distillation
92. A process in which the entire liquid mixture is suddenly vaporized by passing the feed from a high
pressure zone to a low pressure zone:
Correct : D. Flash Distillation
93. In which process a part of the vapor is condensed and returned as liquid?
Correct : A. Fractional Distillation
94. Absolute alcohol can be prepared by which method?
Correct : B. Azeotropic Distillation
95. Which process is based on the principle of Simple Distillation with some modifications?
Correct : C. Distillation under reduced Pressure
96. Double neck Distillation Flask is known as?
Correct : A. Claisen Flask
97. High Boiling liquids cannot be purified by simple distillation, since the constituents in the mixture
tend to_________________ at higher temperatures.
Correct : B. Decompose
98. Which process is also known as Short-Path Distillation?
Correct : D. Molecular Distillation
99. Talc has equilibrium Moisture Content (EMC) of practically:
Correct : B. Zero
100. Which of the following type of product is having equilibrium moisture content (EMC) of practically
Zero?