MCQOPTIONS
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MCQOPTIONS
This section includes 115 Mcqs, each offering curated multiple-choice questions to sharpen your Company QA knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Talc has equilibrium Moisture Content (EMC) of practically: |
| A. | One |
| B. | Zero |
| C. | Variable |
| D. | High |
| Answer» C. Variable | |
| 2. |
The biggest disadvantage of Sigma Blade mixer is: |
| A. | Size reduction |
| B. | Size separation |
| C. | Fixed speed |
| D. | Dead spots |
| Answer» D. Dead spots | |
| 3. |
Ribbon blender is used to mix: |
| A. | Solid Mixing |
| B. | Liquid mixing-Liquid Mixing |
| C. | Solid-Solid Mixing |
| D. | Both (b) or (c) |
| Answer» E. | |
| 4. |
Which of the following factor does NOT affect the size reduction? |
| A. | Hardness |
| B. | Stickiness |
| C. | Viscosity |
| D. | Abrasiveness |
| Answer» D. Abrasiveness | |
| 5. |
Which one of the following rate is observed in mixing of solids? |
| A. | First order law |
| B. | zero order law |
| C. | Second order law |
| D. | none |
| Answer» B. zero order law | |
| 6. |
The main principle of Sieve shaker is: |
| A. | Attrition |
| B. | Centrifugation |
| C. | Agitation |
| D. | Compression |
| Answer» D. Compression | |
| 7. |
Which of the following is not a part of mixing vessel? |
| A. | Impeller |
| B. | Baffle |
| C. | Calendria |
| D. | Propellers |
| Answer» D. Propellers | |
| 8. |
Heat transfer takes place according to |
| A. | First law of thermodynamics |
| B. | Second law of thermodynamics |
| C. | Third law of thermodynamics |
| D. | Zeroth law of thermodynamics |
| Answer» C. Third law of thermodynamics | |
| 9. |
Water Attack test is performed on glass in order to find the limits of one of the following? |
| A. | Acid liberated |
| B. | Alkali liberated |
| C. | Conductivity |
| D. | Metal ions |
| Answer» C. Conductivity | |
| 10. |
Number of sieve is defined as? |
| A. | This is the number of meshes in a length of 25.4 mm in each direction, parallel to the wires |
| B. | This is the number of meshes in a length of 24.5 mm in each direction, parallel to the wires |
| C. | This is the number of meshes in a length of 26.5 mm in each direction, parallel to the wires |
| D. | This is the number of meshes in a length of 28.4 mm in each direction, parallel to the wires |
| Answer» B. This is the number of meshes in a length of 24.5 mm in each direction, parallel to the wires | |
| 11. |
Solar water heaters, solar cookers, microwave ovens, microwave cookers, sonicator baths etc., areexamples of which type transfer of heat mechanism? |
| A. | Conduction |
| B. | Radiation |
| C. | Convection |
| D. | None of these |
| Answer» C. Convection | |
| 12. |
Rectification is another name of: |
| A. | Fractional distillation |
| B. | Molecular distillation |
| C. | Simple distillation |
| D. | Destructive distillation |
| Answer» B. Molecular distillation | |
| 13. |
In Vacuum Distillation, Substance boils at a/an: |
| A. | Exact temperature |
| B. | temperature slightly above its boiling point |
| C. | temperature below its boiling point |
| D. | High Pressure |
| Answer» D. High Pressure | |
| 14. |
The following Equipment is best for evaporating concentrated aqueous and thermostable liquors: |
| A. | Horizontal Tube evaporator |
| B. | Triple effect evaporator |
| C. | Climbing Film Evaporator |
| D. | Evaporating Pan |
| Answer» E. | |
| 15. |
Filtration is a unit operation that is commonly used for collecting: |
| A. | Filtrate |
| B. | Particulate matter |
| C. | Precipitate |
| D. | Slurry |
| Answer» B. Particulate matter | |
| 16. |
Which is NOT a Mode of Size Reduction? |
| A. | Cutting |
| B. | Compression |
| C. | Vaporization |
| D. | Attrition |
| Answer» D. Attrition | |
| 17. |
Rate of evaporation is______: |
| A. | directly proportional to temperature of liquid |
| B. | inversely proportional to temperature of liquid |
| C. | independent of temperature of liquid |
| D. | directly proportional to humidity of surrounding air |
| Answer» B. inversely proportional to temperature of liquid | |
| 18. |
Which type of mixture is easily formed? |
| A. | Positive |
| B. | Negative |
| C. | Neutral |
| D. | Ampholytic |
| Answer» B. Negative | |
| 19. |
Degree of mixing is also known as: |
| A. | Degree of Homogeneity |
| B. | Extent of mixing |
| C. | Ordered Mixing |
| D. | Random Mixing |
| Answer» B. Extent of mixing | |
| 20. |
Mechanism of mixing in silverson mixer is: |
| A. | Connective |
| B. | laminar |
| C. | Random |
| D. | Turbulent |
| Answer» E. | |
| 21. |
In comparison to Ribbon blender, Planetary Mixer has advantage of: |
| A. | High Shear |
| B. | Fixed speed drive |
| C. | Less headspace requirement |
| D. | No Dead space |
| Answer» E. | |
| 22. |
Entrainment separator is part of which evaporator? |
| A. | Climbing Film Evaporator |
| B. | Triple effect evaporator |
| C. | Horizontal Tube Evaporator |
| D. | Evaporating Pan |
| Answer» B. Triple effect evaporator | |
| 23. |
In Cyclone separator, the separation depends on: |
| A. | Size & Shape |
| B. | Shape and Surface area |
| C. | Size & Density |
| D. | Surface texture & Size |
| Answer» D. Surface texture & Size | |
| 24. |
In silverson emulsifier, what is the only disadvantage? |
| A. | Poor Mixing |
| B. | Clogging of pores of the mesh |
| C. | Separation |
| D. | Size reduction |
| Answer» C. Separation | |
| 25. |
Which process is also known as Short-Path Distillation? |
| A. | Simple Distillation |
| B. | Fractional Distillation |
| C. | Steam Distillation |
| D. | Molecular Distillation |
| Answer» E. | |
| 26. |
The bell crank lever arrangement is major part of which of the following………: |
| A. | Cyclone separator |
| B. | Edge runner Mill |
| C. | End runner Mill |
| D. | Bag filter |
| Answer» E. | |
| 27. |
A powder, all the particles of which pass through sieve no. 44 is called? |
| A. | Coarse powder |
| B. | Moderately fine powder |
| C. | Fine powder |
| D. | Very fine powder |
| Answer» C. Fine powder | |
| 28. |
Herringbone screen recommends use of which type of material for separation? |
| A. | Slurries |
| B. | Fibrous materials |
| C. | Amorphous & crystalline materials |
| D. | Only slurries with coarse particles |
| Answer» D. Only slurries with coarse particles | |
| 29. |
Hormones, antibiotics & enzymes are: |
| A. | Heat-sensitive |
| B. | Cold-sensitive |
| C. | Volatile |
| D. | None of these |
| Answer» B. Cold-sensitive | |
| 30. |
E = KR (Sn - Si) belongs to which law/Theory? |
| A. | Bond’s theory |
| B. | Lacey Theory |
| C. | Kick’s Theory |
| D. | Rittinger’s Theory |
| Answer» E. | |
| 31. |
Absolute alcohol can be prepared by which method? |
| A. | Molecular Distillation |
| B. | Azeotropic Distillation |
| C. | Fractional Distillation |
| D. | Steam Distillation |
| Answer» C. Fractional Distillation | |
| 32. |
Which evaporator can be modified to Triple effect Evaporator/ Multiple effect evaporator? |
| A. | Vertical Tube Evaporator |
| B. | Forced Circulation evaporator |
| C. | Horizontal Tube Evaporator |
| D. | None of the above |
| Answer» B. Forced Circulation evaporator | |
| 33. |
Which process is widely used to obtain Water for Injection/Purified Water? |
| A. | Steam Distillation |
| B. | Fractional Distillation |
| C. | Simple Distillation |
| D. | All of the above |
| Answer» D. All of the above | |
| 34. |
In which process, concentrated liquid remains as final product? |
| A. | Distillation |
| B. | Evaporation |
| C. | Crystallization |
| D. | Drying |
| Answer» C. Crystallization | |
| 35. |
In the fractionating column of fraction distillation, as we go higher in the column the…..? |
| A. | Temperature becomes lower |
| B. | Temperature becomes higher |
| C. | minimum absorption occurs |
| D. | Sublimation risk increases |
| Answer» B. Temperature becomes higher | |
| 36. |
Lyophilization is also known as: |
| A. | Drying by sublimation |
| B. | Freeze drying |
| C. | Both a & b |
| D. | None |
| Answer» C. Both a & b | |
| 37. |
Which of the following factors do not affect the rate of evaporation? |
| A. | Temperature of liquid |
| B. | Humidity of surrounding air |
| C. | Depth of liquid |
| D. | Surface of liquid |
| Answer» D. Surface of liquid | |
| 38. |
Fluid Energy Mill works on the principle of: |
| A. | Impact & Attrition |
| B. | Rotor & Stator |
| C. | Compression |
| D. | Attrition |
| Answer» B. Rotor & Stator | |
| 39. |
Fourier law of heat conduction is based on the assumption that |
| A. | Heat Flow through a solid in one dimension |
| B. | Heat flow is in steady state |
| C. | Both (A) & (B) |
| D. | None of the options |
| Answer» D. None of the options | |
| 40. |
Which product is NOT dried by spray dryer? |
| A. | Serum |
| B. | Fruit Juice |
| C. | Lactose |
| D. | Bacterial & viral cultures |
| Answer» E. | |
| 41. |
High Boiling liquids cannot be purified by simple distillation, since the constituents in the mixturetend to_________________ at higher temperatures. |
| A. | Loose moisture |
| B. | Decompose |
| C. | Become Volatile |
| D. | None of the above |
| Answer» C. Become Volatile | |
| 42. |
The correct definition of filtration is: |
| A. | When solids are present in a very low concentration, i.e., not exceeding 1.0% w/v, the process of its separation from liquids |
| B. | When solids are present in a very low concentration, i.e., not exceeding 5.0% w/v, the process of its separation from liquids |
| C. | When solids are present in a very low concentration, i.e., not exceeding 2.0% w/v, the process of its separation from liquids |
| D. | When solids are present in a very low concentration, i.e., not exceeding 7.0% w/v, the process of its separation from liquids |
| Answer» B. When solids are present in a very low concentration, i.e., not exceeding 5.0% w/v, the process of its separation from liquids | |
| 43. |
Eutectic Point is an important factor for one of the following drying processes? |
| A. | Drum Drying |
| B. | Fluidized Bed Drying |
| C. | Tray drying |
| D. | Freeze Drying |
| Answer» E. | |
| 44. |
____________ method of distillation is used for the purification & separation of chemicals of lowvapor pressure |
| A. | Steam Distillation |
| B. | Destructive distillation |
| C. | Simple Distillation |
| D. | Molecular Distillation |
| Answer» E. | |
| 45. |
Sonic sifter is a variant/modification of which of the following equipment? |
| A. | Sieve Shaker |
| B. | Cyclone separator |
| C. | Air separator |
| D. | Bag Filter |
| Answer» B. Cyclone separator | |
| 46. |
Evaporator working on basis of Pump or pressure: |
| A. | Climbing Film Evaporator |
| B. | Triple effect evaporator |
| C. | Horizontal Tube Evaporator |
| D. | Forced Circulation Evaporator |
| Answer» E. | |
| 47. |
The (emissivity) of a black body is: |
| A. | 1 |
| B. | 1.5 |
| C. | 2 |
| D. | None |
| Answer» B. 1.5 | |
| 48. |
Which process is based on the principle of Simple Distillation with some modifications? |
| A. | Fractional Distillation |
| B. | Steam Distillation |
| C. | Distillation under reduced Pressure |
| D. | None of these |
| Answer» D. None of these | |
| 49. |
Which is not a non-ferrous metal? |
| A. | Copper |
| B. | Aluminum |
| C. | Steel |
| D. | Lead |
| Answer» D. Lead | |
| 50. |
A process in which the entire liquid mixture is suddenly vaporized by passing the feed from a highpressure zone to a low pressure zone: |
| A. | Simple Distillation |
| B. | Fractional Distillation |
| C. | Steam Distillation |
| D. | Flash Distillation |
| Answer» E. | |