MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Separation Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the specialty of the circulating liquor crystallizer? |
| A. | Supersaturaion is created in separate region |
| B. | Supersaturation is not created |
| C. | Supersaturation is created at every point |
| D. | Crystals are automatically thrown out of crystallizer |
| Answer» B. Supersaturation is not created | |
| 2. |
What is the time for a typical cycle, including charging the feed, crystallization, and removal of the magma? |
| A. | 1 hour |
| B. | 2-8hr |
| C. | 7-15hr |
| D. | 5-14hr |
| Answer» C. 7-15hr | |
| 3. |
WHAT_IS_THE_TIME_FOR_A_TYPICAL_CYCLE,_INCLUDING_CHARGING_THE_FEED,_CRYSTALLIZATION,_AND_REMOVAL_OF_THE_MAGMA??$ |
| A. | 1 hour |
| B. | 2-8hr |
| C. | 7-15hr |
| D. | 5-14hr |
| Answer» C. 7-15hr | |
| 4. |
What_is_the_specialty_of_the_circulating_liquor_crystallizer?$ |
| A. | Supersaturaion is created in separate region |
| B. | Supersaturation is not created |
| C. | Supersaturation is created at every point |
| D. | Crystals are automatically thrown out of crystallizer |
| Answer» B. Supersaturation is not created | |
| 5. |
What ensures a reasonable heat transfer rate through a small temperature driving force? |
| A. | High agitation speed |
| B. | High magma velocity |
| C. | High nucleation rate |
| D. | Low nucleation rate |
| Answer» C. High nucleation rate | |
| 6. |
What is the result of unagitated batch crystallizers? |
| A. | Undesirably large crystals |
| B. | Impure crystals |
| C. | Entrapment of mother liquor |
| D. | High secondary nucleation rate |
| Answer» E. | |
| 7. |
What is not an advantage of using mechanical agitation? |
| A. | High purity |
| B. | Uniform crystal size |
| C. | High purity |
| D. | Low rate of primary nucleation |
| Answer» E. | |
| 8. |
Which type of crystallizers does industry employ? |
| A. | Evaporative |
| B. | Cooling |
| C. | Sublimating |
| D. | Boiling |
| Answer» B. Cooling | |
| 9. |
What is the near ambient temperature range for most inorganic solids? |
| A. | 10-20 |
| B. | 10-40 |
| C. | 40-67 |
| D. | 70-80 |
| Answer» C. 40-67 | |
| 10. |
What is the crystal size range of draft-tube-baffle crystallizer? |
| A. | 1-2 mesh |
| B. | 30-60mesh |
| C. | 8-30mesh |
| D. | 100-200mesh |
| Answer» D. 100-200mesh | |
| 11. |
Why the axial pump flow speed is preferred in forced circulation crystallizer? |
| A. | To reduce primary nucleation rate |
| B. | To reduce the crystal size |
| C. | To increase the crystal size |
| D. | To keep the secondary nucleation rate small |
| Answer» E. | |
| 12. |
What is the crystal size range of forced circulation crystallizer? |
| A. | 10-20mesh |
| B. | 20-30mesh |
| C. | 30-60mesh |
| D. | 100-200mesh |
| Answer» D. 100-200mesh | |