MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
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. | |
| 2. |
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. | |
| 3. |
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 | |
| 4. |
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 | |
| 5. |
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 | |
| 6. |
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 | |
| 7. |
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 N<sub>Re,i</sub> has no impact over N<sub>Po</sub> |
| B. | In the transient region, the N<sub>Re,i</sub> has no impact over N<sub>Po</sub> |
| C. | In the laminar region, the N<sub>Po</sub> continually falls as N<sub>Re,i</sub> increases |
| D. | None of the mentioned |
| Answer» B. In the transient region, the N<sub>Re,i</sub> has no impact over N<sub>Po</sub> | |
| 8. |
Statement 1: Froude number relates the gravitational effect which is important when the liquid is agitated by an impeller.Statement 2: When NRe,i < 300, NFr is ineffective. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 9. |
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. | |