MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Food Processing Unit Operations knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Are these statements about the evaporators true?Statement 1: Product foaming during vaporization is common. |
| A. | nStatement 2: Foaming can often be minimized by special designs for the feed outlet. |
| B. | True, False |
| C. | True, True |
| D. | False, True |
| E. | False, False |
| Answer» B. True, False | |
| 2. |
Which of the following evaporator has low compression ratio? |
| A. | Vacuum evaporator |
| B. | Agitated thin film evaporator |
| C. | Shell and tube evaporator |
| D. | Forced circulation evaporator |
| Answer» B. Agitated thin film evaporator | |
| 3. |
Which of the following evaporator is mainly used when the feed is almost saturated? |
| A. | Forward feed |
| B. | Backward feed |
| C. | Parallel feed |
| D. | Antiparallel feed |
| Answer» D. Antiparallel feed | |
| 4. |
Which of the following evaporator is used to avoid crystallization? |
| A. | Falling film evaporator |
| B. | Agitated thin film evaporator |
| C. | Shell and tube evaporator |
| D. | Forced circulation evaporator |
| Answer» E. | |
| 5. |
What is the principle behind rising film evaporators? |
| A. | Thermo-siphon |
| B. | Thermostatic |
| C. | Thermodynamic |
| D. | Pareto |
| Answer» B. Thermostatic | |
| 6. |
How is steam economy calculated? |
| A. | Mass of u2009evaporated u2009liquid/Mass u2009of u2009heating u2009steam |
| B. | Mass of u2009evaporated u2009liquid+Mass u2009of u2009heating u2009steam |
| C. | Mass of u2009evaporated u2009liquidxMass u2009of u2009heating u2009steam |
| D. | Mass u2009of u2009heating u2009steam/Mass of u2009evaporated u2009liquid |
| Answer» B. Mass of u2009evaporated u2009liquid+Mass u2009of u2009heating u2009steam | |
| 7. |
Are these statements about the falling film evaporator true?Statement 1: Minimize the chances of fouling on tube surfaces. |
| A. | nStatement 2: Fast operation and short contact time for working fluid. |
| B. | True, False |
| C. | True, True |
| D. | False, True |
| E. | False, False |
| Answer» C. True, True | |
| 8. |
Which of the following is called calandria evaporator? |
| A. | Falling film evaporator |
| B. | Agitated thin film evaporator |
| C. | Short tube vertical |
| D. | Climbing film evaporator |
| Answer» D. Climbing film evaporator | |
| 9. |
Which of the following is called wiped film evaporator? |
| A. | Falling film evaporator |
| B. | Agitated thin film evaporator |
| C. | Shell and tube evaporator |
| D. | Climbing film evaporator |
| Answer» C. Shell and tube evaporator | |
| 10. |
Which is the suitable source for heating the evaporators? |
| A. | Steam |
| B. | Direct heating |
| C. | Electric resistance |
| D. | Heaters |
| Answer» B. Direct heating | |