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. |
Is supersaturation the driving force for all solution crystallization processes? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following statements about secondary crystallization are correct?Statement 1:Secondary nucleation is the formation of nuclei from pre-existing crystals.Statement 2: Only secondary nucleation increases the number of crystals in the system. |
| A. | True, False |
| B. | True, True |
| C. | False, True |
| D. | False, False |
| Answer» B. True, True | |
| 3. |
What are the factors that affect crystallization seedling? |
| A. | Temperature and pressure |
| B. | Polymorphism of the crystals and pressure |
| C. | Crystal size distribution and temperature |
| D. | Crystal size distribution and polymorphism of the crystals |
| Answer» E. | |
| 4. |
What is seeding in crystallization? |
| A. | It is the initial step in crystallization |
| B. | It is the final step in crystallization |
| C. | It is the step where nucleus is added |
| D. | It is the sub category crystallization |
| Answer» D. It is the sub category crystallization | |
| 5. |
What is homogeneous nucleation? |
| A. | Spontaneously generated nuclei |
| B. | Randomly generated nuclei |
| C. | Orderly generated nuclei |
| D. | Randomly and spontaneously generated nuclei |
| Answer» E. | |
| 6. |
Which of the following statements about primary nucleation are correct?Statement 1:The appearance of the first crystal is called primary nucleation time.Statement 2:It describes the transition to a new phase. |
| A. | True, False |
| B. | True, True |
| C. | False, True |
| D. | False, False |
| Answer» C. False, True | |
| 7. |
What is nucleation in freezing? |
| A. | Process of gathering of molecules into tiny clusters |
| B. | It is the final step in freezing |
| C. | It is the step where nucleus is added |
| D. | It is the sub category freezing |
| Answer» B. It is the final step in freezing | |
| 8. |
How does temperature affect nucleation? |
| A. | Nucleation is directly proportional to temperature |
| B. | Nucleation is indirectly proportional to temperature |
| C. | Nucleation and temperature are always at equilibrium |
| D. | Nucleation and temperature does not depend on each other |
| Answer» C. Nucleation and temperature are always at equilibrium | |
| 9. |
How to initiate crystallization? |
| A. | Adding seed crystals |
| B. | Adjusting temperature |
| C. | Adjusting pressure |
| D. | Adjusting concentration |
| Answer» B. Adjusting temperature | |
| 10. |
What is nucleation in crystallization? |
| A. | It is the initial step in crystallization |
| B. | It is the final step in crystallization |
| C. | It is the step where nucleus is added |
| D. | It is the sub category crystallization |
| Answer» B. It is the final step in crystallization | |