MCQOPTIONS
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MCQOPTIONS
This section includes 78 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Kick’s law is an intermediate between rittinger’s law and bond’s law. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 2. |
A ball mill uses _____ |
| A. | Impact |
| B. | Attrition |
| C. | Impact & Attrition |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
Which of the following is NOT an advantage of mechanical transportation? |
| A. | Transportation is economical and quick |
| B. | Handling is contamination free |
| C. | No human injury |
| D. | None of the mentioned |
| Answer» E. | |
| 4. |
In differential screen analysis, for calculating the particle size of the food particles on any one sieve, the average food particle size on that sieve is the mean of the screen opening of that sieve and the sieve below it. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 5. |
Statement 1: Dispersion of one immiscible liquid into another also involves size reduction.Statement 2: Leaching requires size reduction. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 6. |
Statement 1: Grinding laws are based on the energy required for the creation of new surface area.Statement 2: In general, all the laws are based on the principle that the energy required per unit area of the surface is directly proportional to the size of the particle. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 7. |
Statement 1: Kneaders are specially used for pastry/viscous liquids in the food industry.Statement 2: Kneaders are used for mixing dough with fats and making them homogeneous mixtures. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 8. |
Statement 1: In the transient zone, the power input depends on the density and viscosity of the fluid.Statement 2: In the laminar zone, the power input depends on the density only. It is independent of the viscosity of the fluid. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 9. |
With respect to the relationship between the power number and the impeller Reynolds’s number, which amongst the following statements is true? |
| A. | In the turbulent region, the Nʀₑ,ᵢ has no impact over Nₚₒ |
| B. | In the transient region, the Nʀₑ,ᵢ has no impact over Nₚₒ |
| C. | In the laminar region, the Nₚₒ continually falls as Nʀₑ,ᵢ increases |
| D. | None of the mentioned |
| Answer» B. In the transient region, the Nʀₑ,ᵢ has no impact over Nₚₒ | |
| 10. |
Power required for a gassed system is more than that required for an ungassed system. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 11. |
Which of the following is true with respect to mixing operations in the food industry? |
| A. | Ice creams |
| B. | Confectionery products |
| C. | Chlorinated waters |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
Which of the following is NOT an application of mixing solids in the food industry? |
| A. | Biscuit/bakery making |
| B. | Poultry and cattle feed |
| C. | Chips and snacks industry |
| D. | None of the mentioned |
| Answer» E. | |
| 13. |
Which of the following is true with respect to Carbonation? |
| A. | Gas-liquid mixing |
| B. | Helps improve storage life |
| C. | Increased pressure |
| D. | All of the mentioned |
| Answer» E. | |
| 14. |
With respect to dipping oil emulsions, which of the following is true? |
| A. | Used for easy dehydration of food |
| B. | Gives a thin layer of coating on the fruit berries |
| C. | Dipping oil made from an emulsion by mixing of fatty esters with some amount of aqueous potassium carbonate solutions by high speed impellers |
| D. | All of the mentioned |
| Answer» E. | |
| 15. |
Pneumatic conveying is done under which of the mentioned conditions? |
| A. | High pressure |
| B. | Vacuum |
| C. | Fluidization |
| D. | Any of the mentioned |
| Answer» E. | |
| 16. |
Statement 1: Where Pg is power for a gassed system and Po is power for an ungassed system, Pg/Po is _____Statement 2: Na stands for _____ |
| A. | < 1, aeration number |
| B. | > 1, aeration number |
| C. | < 1, consistency index |
| D. | > 1, consistency index |
| Answer» B. > 1, aeration number | |
| 17. |
Which of the following does NOT include power required for mixing by an impeller? |
| A. | Rheological nature of the fluid |
| B. | Friction in the motor |
| C. | Speed, nature and type of the impeller |
| D. | None of the mentioned |
| Answer» C. Speed, nature and type of the impeller | |
| 18. |
Which of the following application is a belt conveyor used for? |
| A. | Material transportation over long distances |
| B. | Material transportation within premises |
| C. | Material transportation for processing |
| D. | All of the mentioned |
| Answer» E. | |
| 19. |
Which of the following uses attrition? |
| A. | Ball mill |
| B. | Plate mill |
| C. | Roller mill |
| D. | All of the mentioned |
| Answer» E. | |
| 20. |
What is the flow rate of materials in a bucket conveyor dependent on? |
| A. | Shape of the buckets |
| B. | Spacing of the buckets |
| C. | Speed of the conveyor |
| D. | All of the mentioned |
| Answer» E. | |
| 21. |
The force used for mixing by mixing equipment for pastes and dough is _____ |
| A. | Centrifugal smearing |
| B. | Impact |
| C. | Tumbling |
| D. | All of the mentioned |
| Answer» E. | |
| 22. |
Rate of mixing at any time is given by the extent of mixing at that particular time. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 23. |
Statement 1: For non-Newtonian fluids, another term called apparent viscosity is used as their viscosity changes with the change in the shear rate.Statement 2: For non-Newtonian fluids, between the transition region, the power number for non-Newtonian fluids is slightly higher than that for Newtonian fluids. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 24. |
Fork-lift trolleys are a combination of chain hoists and interlock transfer cranes. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 25. |
In food industry, the animal processing sector requires mechanical transportation to minimize human intervention and to maintain hygiene. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 26. |
Statement 1: In both, centrifuge and sedimentation, the terminal velocity of the particle is reached after a certain time.Statement 2: The formula used for finding out the velocity is the same for both the processes. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» E. | |
| 27. |
In the centrifuge, heavier particles will have a larger radius. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 28. |
The area of neutral zone, in a centrifuge is __________ |
| A. | Between the heavy and light liquid |
| B. | Next to the light liquid and away from the heavy liquid |
| C. | Next to the heavy liquid and away from the light liquid |
| D. | Above the heavy liquid and below the light liquid |
| Answer» B. Next to the light liquid and away from the heavy liquid | |
| 29. |
Statement 1: In a dairy industry, it is desired to obtain the cream from milk using a centrifuge. Which will stay in the center?Statement 2: It is desired to have __________ for the above process. |
| A. | Cream, a small neutral zone |
| B. | Milk, a small neutral zone |
| C. | Milk, a large neutral zone |
| D. | Cream, a large neutral zone |
| Answer» B. Milk, a small neutral zone | |
| 30. |
Statement 1: Flat blade/curve blade/arrow head/vaned disc turbines are generally used for gas-liquid mixing.Statement 2: Helical screw/ribbon mixer/gate anchor are generally used for solid-solid mixing. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 31. |
Statement 1: Belt conveyors cannot be used in the inclined position.Statement 2: Screw conveyors can carry more amount of load compared to belt conveyors. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |
| 32. |
4 screens can separate _____ differently sized particles. |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 33. |
Slat belts are made up of_____ |
| A. | Wood |
| B. | Plastic |
| C. | Metal |
| D. | Any of the mentioned |
| Answer» E. | |
| 34. |
Which of the following is NOT true with respect to size reduction? |
| A. | Size reduction is an energy inefficient process as the energy required for grinding is very high |
| B. | Some of the energy liberated in the formation of new small surfaces is the grinding energy required by food material per unit surface area to form new surface areas and the rest is generally just heat |
| C. | The crushing efficiency is inversely proportional to the surface created |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 35. |
Which of the following does NOT include the application of material handling and transportation in food processing? |
| A. | Fruits and vegetables processing |
| B. | Cereals and pulses processing |
| C. | Spices and condiments processing |
| D. | All of the mentioned |
| Answer» E. | |
| 36. |
Statement 1: The g-number is the ratio of the velocity in a centrifuge to that of the velocity in sedimentation.Statement 2: The g-number is represented as Z. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 37. |
Statement 1: The radius of neutral zone depends on the radius of the centrifuge.Statement 2: More is the radius, lesser is the zone of centrifuge. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 38. |
Basket centrifuge can be used for liquid-liquid separations. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 39. |
Statement 1: Root mean square is denoted by σ₂Statement 2: σ₂ will show the variation of a composition obtained after mixing. Hence the lesser it is, the more efficient is the mixing. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 40. |
Which of the following conditions show that a certain industrial mixer is the best? |
| A. | Power load for mixing is minimum |
| B. | Standard deviation is minimum |
| C. | Time required for mixing is minimum |
| D. | All of the mentioned |
| Answer» E. | |
| 41. |
Which of the following is an application of sedimentation in the food industry? |
| A. | Effluent treatment plant |
| B. | Settling of dust on fruits |
| C. | Effluent treatment plant & Settling of dust on fruits |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 42. |
Which of the following with respect to mixing is true? |
| A. | It is used to distribute heat uniformly to all the components of the mixture |
| B. | Mixing becomes difficult when one of the phases to be mixed is in minor quantity |
| C. | Solid-solid mixing is more difficult than other phases |
| D. | All of the mentioned |
| Answer» E. | |
| 43. |
Dorr-Oliver thickener is also called a _____ |
| A. | Continuous thickener |
| B. | Raker |
| C. | Continuous thickener & Raker |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 44. |
Statement 1: Which mixture is used when one of the components is very less in quantity?Statement 2: This mixer is used to mix items in savory or a snack item. |
| A. | Ribbon mixer, planetary mixer |
| B. | Planetary mixer, double cone mixer |
| C. | Double cone mixer, double cone mixer |
| D. | Planetary mixer, planetary mixer |
| Answer» D. Planetary mixer, planetary mixer | |
| 45. |
Which food industry is centrifuge NOT used in? |
| A. | Savory and snack foods |
| B. | Sugar Industry |
| C. | Dairy processing |
| D. | None of the mentioned |
| Answer» E. | |
| 46. |
The experimental details of the batch sedimentation experiment are comprehended by plotting which of the following two? |
| A. | Height of interface against time |
| B. | Concentration of solids against time |
| C. | Settling rate vs slurry concentration |
| D. | All of the mentioned |
| Answer» B. Concentration of solids against time | |
| 47. |
Statement 1: A hammer mill uses an impact to break particles.Statement 2: A chakki uses compression to break particles. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 48. |
Statement 1: Effectiveness of mixing in kneaders depends on the blade design.Statement 2: Kneaders have a high clearance between the two oppositely rotating blades and the vessel. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 49. |
Gyratory screens are used when it is a continuous operation to be handled and the amount of material to be handled is very high. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 50. |
Statement 1: Tubular bowl centrifuges can handle slurries.Statement 2: Tubular bowl centrifuges can be used for 3 phase separation. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |