MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Fluidization Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
To upgrade the poor quality phosphate rock, Dorr-Oliver made few modification such as? |
| A. | Three-stage fluidized bed |
| B. | 5 meters diameter |
| C. | Height 12 meters |
| D. | All of the mentioned |
| Answer» E. | |
| 2. |
For the process of pelletization, which material is added in order to make it sticky? |
| A. | Soda ash or caustic soda |
| B. | Crude oil |
| C. | Salt and water |
| D. | All of the mentioned |
| Answer» B. Crude oil | |
| 3. |
What is the percentage conversion of overflow product in the calciner? |
| A. | 95.4% |
| B. | 75.3% |
| C. | 96.8% |
| D. | 99.7% |
| Answer» D. 99.7% | |
| 4. |
In calcination stage, how many nozzles where used to spray fuel oil? |
| A. | 5 |
| B. | 10 |
| C. | 12 |
| D. | 18 |
| Answer» D. 18 | |
| 5. |
Commercial limestone calciner, developed in 1949, for New England Lime company, they used feed of mesh? |
| A. | 6 to 65 |
| B. | 8 to 85 |
| C. | 2 to 125 |
| D. | 200 |
| Answer» B. 8 to 85 | |
| 6. |
Commercial limestone calciner, developed in 1949, for New England Lime company, it had height of? |
| A. | 14 meters |
| B. | 18 meters |
| C. | 12 meters |
| D. | 15 meters |
| Answer» B. 18 meters | |
| 7. |
Commercial limestone calciner, developed in 1949, for New England Lime company, it had diameter of? |
| A. | 4 meters |
| B. | 8 meters |
| C. | 2 meters |
| D. | 10 meters |
| Answer» B. 8 meters | |
| 8. |
In order to recover most of the heat produced, which kind of staging is used in fluidized bed? |
| A. | Single stage |
| B. | Multi-stage |
| C. | Stages in series |
| D. | None of the mentioned |
| Answer» C. Stages in series | |
| 9. |
Calcination of limestone is what kind of reaction? |
| A. | Endothermic |
| B. | Exothermic |
| C. | Reversible |
| D. | None of the mentioned |
| Answer» B. Exothermic | |
| 10. |
Calcination of limestone and dolomite takes place at which temperature(degree Celsius)? |
| A. | 100 |
| B. | 500 |
| C. | 1000 |
| D. | 2000 |
| Answer» D. 2000 | |