MCQOPTIONS
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MCQOPTIONS
This section includes 270 Mcqs, each offering curated multiple-choice questions to sharpen your Dairy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is a calf over six months of age called? |
| A. | adult |
| B. | mature |
| C. | heifer |
| D. | bull |
| Answer» D. bull | |
| 2. |
Pore size Micro-filtration membrane ranges from _________ |
| A. | 0.1- 5µm |
| B. | 0.1- 0.01µm |
| C. | 0.001- 0.01µm |
| D. | 0.0001- 0.001µm |
| Answer» B. 0.1- 0.01µm | |
| 3. |
Main application of liquid ring pump is in which of the following? |
| A. | Low viscosity products |
| B. | Heavily aerated liquids |
| C. | Gentle treatment with high viscosity |
| D. | Water treatment |
| Answer» C. Gentle treatment with high viscosity | |
| 4. |
Evaporator which promotes natural circulation is? |
| A. | Horizontal tube evaporator |
| B. | Vertical tube evaporator |
| C. | Vacuum pan evaporator |
| D. | Forced circulation evaporator |
| Answer» C. Vacuum pan evaporator | |
| 5. |
Intermediate storage tank can be used during process halt. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 6. |
What is a baby dairy cow called? |
| A. | baby |
| B. | cochon |
| C. | calf |
| D. | shamp |
| Answer» D. shamp | |
| 7. |
The deflector used in long tube vertical evaporator can be used as? |
| A. | Vapor separator |
| B. | Foam breaker |
| C. | Pasteurizer |
| D. | Vapor separator and foam breaker |
| Answer» E. | |
| 8. |
What is a good source of carotene to provide Vitamin A to cattle? |
| A. | Green leafy grass and yellow corn |
| B. | Wheat |
| C. | Maize |
| D. | Millet |
| Answer» B. Wheat | |
| 9. |
Which among the following are the problem associated with aeration in milk?I) Incrustation of heating surfaces in pasteurizers (fouling)II) Reduced skimming efficiency in separatorsIII) Loss of precision in automatic in-line standardizationIV) Inaccurate in-line fat standardization |
| A. | I), II) and III) |
| B. | I) and II) |
| C. | I), II), III) and IV) |
| D. | I) only |
| Answer» D. I) only | |
| 10. |
Name the scientist who invented Homogenization? |
| A. | Pasteur |
| B. | Rutherford |
| C. | Leuwenhoek |
| D. | Gaulin |
| Answer» E. | |
| 11. |
What is the most common breed of dairy cow? |
| A. | Holstein |
| B. | Aryshire |
| C. | Brown Swiss |
| D. | Jersey |
| Answer» B. Aryshire | |
| 12. |
Pore size Ultra-filtration membrane ranges from ________ |
| A. | 0.1- 5µm |
| B. | 0.1- 0.01µm |
| C. | 0.001- 0.01µm |
| D. | 0.0001- 0.001µm |
| Answer» C. 0.001- 0.01µm | |
| 13. |
Which material is used for pipes which are in contact with milk or product? |
| A. | Stainless steel |
| B. | Copper |
| C. | Ceramic |
| D. | Plastic |
| Answer» B. Copper | |
| 14. |
The maximum size of silo used in dairy is? |
| A. | 150000 litres |
| B. | 100000 litres |
| C. | 10000 litres |
| D. | 100 litres |
| Answer» B. 100000 litres | |
| 15. |
What piece of equipment may be used to trip cow’s hooves?I. Hoop trimmerII. NipperIII. Hoop knifeIV. ChiselV. Mallet |
| A. | I, II and IV |
| B. | I, II and III |
| C. | I only |
| D. | I, II, III, IV and V |
| Answer» E. | |
| 16. |
Which of the following mechanisms is used by a membrane filter to remove particulate material from the water? |
| A. | Adsorption |
| B. | Settling |
| C. | Straining |
| D. | Crystallization |
| Answer» D. Crystallization | |
| 17. |
A raw water reservoir would be an example of which membrane pretreatment method (where the goal is to reduce the loading and fouling potential of the water fed to the membrane)? |
| A. | Filtration |
| B. | Clarification |
| C. | Chemical treatment |
| D. | Pasteurization |
| Answer» C. Chemical treatment | |
| 18. |
What is the specific flux of the system if it contains 75 sq. ft. of filter area and operates for 24 hours at a flow rate of 5 gpm? Assume that the water temperature is 20℃ and the TMP of the system is 20 psi. |
| A. | 5.6 gfd/psi |
| B. | 4.8 gfd/psi |
| C. | 9.4 gfd/psi |
| D. | 5.5 gfd/psi |
| Answer» C. 9.4 gfd/psi | |
| 19. |
What is an excellent point to blend into on the rear legs when clipping? |
| A. | blood view in the hock region |
| B. | udder |
| C. | skin |
| D. | eyes |
| Answer» B. udder | |
| 20. |
Cows of what breed are known for their yellow milk? |
| A. | Holstein |
| B. | Jersey |
| C. | Brown Swiss |
| D. | Guernsey |
| Answer» E. | |
| 21. |
What breed of dairy cow came to the United States from Holland? |
| A. | Holstein |
| B. | Brown Swiss |
| C. | Arya |
| D. | jersey |
| Answer» B. Brown Swiss | |
| 22. |
Concentration is different than drying. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 23. |
In order to prevent sedimentation in homogenized milk which of the following measure prove effective? |
| A. | Heating |
| B. | Pasteurization |
| C. | Concentration of milk |
| D. | Filtration/clarification of milk prior to homogenization |
| Answer» E. | |
| 24. |
Which among the following is shut-off and change over valve? |
| A. | Seat valve |
| B. | Butterfly valve |
| C. | Seat valve and butterfly valve |
| D. | Bend |
| Answer» D. Bend | |
| 25. |
Disruption of fat globules into much smaller fat globules is defined as? |
| A. | Standardization |
| B. | Centrifugation |
| C. | Homogenization |
| D. | Chilling |
| Answer» E. | |
| 26. |
Evaporators in the dairy industry don’t concentrate which of the following? |
| A. | Whole and skimmed milk |
| B. | Whey |
| C. | Condensed milk |
| D. | Cheese |
| Answer» E. | |
| 27. |
Tank used for “collection and reception of milk” is called ______ |
| A. | Storage tank |
| B. | Process tank |
| C. | Mixing tank |
| D. | Balance tank |
| Answer» B. Process tank | |
| 28. |
Two-stage homogenization may not be applied to which of the following? |
| A. | Products with a high fat content |
| B. | Products where high homogenization efficiency is desired. |
| C. | Product with low viscosity |
| D. | Product demanding high viscosity |
| Answer» E. | |
| 29. |
Which of the following is a valid name for a test for testing membrane integrity? |
| A. | Flux membrane test |
| B. | Reversal of flow test |
| C. | Air pressure hold test |
| D. | Sediment test |
| Answer» D. Sediment test | |
| 30. |
__________ is the total mass of water vaporized per unit mass of steam input to the evaporator. |
| A. | Efficiency of evaporator |
| B. | Economy of evaporator |
| C. | Rate of evaporator |
| D. | Capacity of evaporator |
| Answer» C. Rate of evaporator | |
| 31. |
___________ pump is also called as velocity pump. |
| A. | Reciprocating |
| B. | Rotary displacement |
| C. | Centrifugal |
| D. | Screw |
| Answer» D. Screw | |
| 32. |
Which of the following membrane separation technique would be most suitable for the concentration of milk proteins in dairy industry? |
| A. | Reverse osmosis |
| B. | Nano filtration |
| C. | Ultra filtration |
| D. | Membrane filtration |
| Answer» D. Membrane filtration | |
| 33. |
How long is a dairy cow’s gestation period? |
| A. | approximately 50 days |
| B. | approximately 100 days |
| C. | approximately 250 days |
| D. | approximately 280 days |
| Answer» E. | |
| 34. |
The term for deposition of solids on the membrane, irreversible during processing is? |
| A. | Feed |
| B. | Flux |
| C. | Membrane fouling |
| D. | Permeate |
| Answer» D. Permeate | |
| 35. |
What is the nitrogen content of commercial mixed raw milk? |
| A. | 0.47% |
| B. | 1.29% |
| C. | 4.45% |
| D. | 6.21% |
| Answer» C. 4.45% | |
| 36. |
What is the process called whereby milk is heated to a high temperature? |
| A. | freezing |
| B. | chilling |
| C. | pasteurization |
| D. | vacuum treatment |
| Answer» D. vacuum treatment | |
| 37. |
The concentrate, the retained liquid is called ___________ |
| A. | Permeate |
| B. | Retentate |
| C. | Concentration factor |
| D. | Diafilteration |
| Answer» C. Concentration factor | |
| 38. |
In order to make milk pass through air eliminator, the inlet of the cylindrical vessel must be located at a ______ level than the outlet pipe of the milk tank on the vehicle. |
| A. | Upper |
| B. | Lower |
| C. | Same |
| D. | Tilted |
| Answer» C. Same | |
| 39. |
Calculate area of a pipe if, flow rate is 20 l/min and flow velocity is 5 cm/s. |
| A. | 66.66 cm² |
| B. | 60 cm² |
| C. | 62 cm² |
| D. | 64 cm² |
| Answer» B. 60 cm² | |
| 40. |
Pore size Nano-filtration membrane ranges from __________ |
| A. | 0.1- 5µm |
| B. | 0.1- 0.01µm |
| C. | 0.001- 0.01µm |
| D. | 0.0001- 0.001µm |
| Answer» D. 0.0001- 0.001µm | |
| 41. |
When showing calves and heifers where should the hind foot nearest the judge be when the animal is posed? |
| A. | one half step back |
| B. | no space |
| C. | 2 steps back |
| D. | 3 steps back |
| Answer» B. no space | |
| 42. |
Components of vacuum deaerator are?I) DeaeratorII) Vacuum pumpIII) Pump unit |
| A. | I) only |
| B. | II) only |
| C. | III) only |
| D. | I), II) and III) |
| Answer» E. | |
| 43. |
Homogenization of cold milk is ineffective. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 44. |
The dispersion of the lipid phase increases with ________ temperatures of homogenisation and is commensurate with the_________ viscosity of milk at higher temperatures. |
| A. | Increase, decrease |
| B. | Increase, increase |
| C. | Decrease, increase |
| D. | Decrease, decrease |
| Answer» C. Decrease, increase | |
| 45. |
What is the objective of Bactofugation? |
| A. | Separate microorganisms from milk |
| B. | Separate fat from skim milk |
| C. | Standardize milk |
| D. | Separate fat globules |
| Answer» B. Separate fat from skim milk | |
| 46. |
Which of the following remains the primary use of membrane filtration in water treatment? |
| A. | Desalination of salt water to produce potable water |
| B. | A pretreatment step in water treatment |
| C. | Filtration of surface or ground water under the direct influence of surface water |
| D. | Pre heating |
| Answer» B. A pretreatment step in water treatment | |
| 47. |
Which of the following factors does not contribute to enhanced stability of homogenized milk? |
| A. | Decrease in the mean diameter of the fat globules |
| B. | Decrease in the size distribution of the fat globules |
| C. | Increase in density of the globules |
| D. | Decrease in density of the globules |
| Answer» E. | |
| 48. |
The choice of animals to be parents of each new generation. Involves culling cows and selecting bulls is called? |
| A. | classification |
| B. | selection |
| C. | mixing |
| D. | breeding |
| Answer» C. mixing | |
| 49. |
Which grade of stainless steel is known as acid proof steel? |
| A. | AISI 304 |
| B. | AISI 316 |
| C. | SIS 2333 |
| D. | SIS 2359 |
| Answer» C. SIS 2333 | |
| 50. |
Which of the following tank are used to create buffer storage? |
| A. | Process tank |
| B. | Intermediate storage tank |
| C. | Mixing tank |
| D. | Balance tank |
| Answer» C. Mixing tank | |