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. |
IN_THE_REACTION_OF_NAPHTHALENE_TO_PHTHALIC_ANHYDRIDE,_WHAT_IS_THE_INTERMEDIATE_FORMED??$ |
| A. | Naphthaquinone |
| B. | Nascent oxygen |
| C. | Naphtha-quinine |
| D. | None of the mentioned |
| Answer» B. Nascent oxygen | |
| 2. |
What are the by-products present in the HCl oxidation process?$ |
| A. | Chlorine gas, water vapour |
| B. | Ammonia gas |
| C. | Chloroform |
| D. | None of the mentioned |
| Answer» B. Ammonia gas | |
| 3. |
Why is the liquid naphthalene fed through nozzles directly to the bottom of the reactor, in the fluidized bed for phthalic anhydride production? |
| A. | Liquid is immediately vaporized |
| B. | Liquid is immediately cooled |
| C. | Liquid is immediately solidified |
| D. | None of the mentioned |
| Answer» B. Liquid is immediately cooled | |
| 4. |
What will happen if the concentration of naphthaquinone builds up in the fluidized bed for phthalic anhydride production? |
| A. | Reaction will explode |
| B. | Helps in temperature control |
| C. | Acts as coolant |
| D. | None of the mentioned |
| Answer» B. Helps in temperature control | |
| 5. |
In the HCl oxidation process, a slurry of catalyst fines in aqueous HCl is injected into the bed as? |
| A. | Feed |
| B. | Coolant |
| C. | For temperature control |
| D. | All of the mentioned |
| Answer» E. | |
| 6. |
What happens if there is no narrow tubes in the fluidized bed for the production of ethylene oxide? |
| A. | Leads to less intermediate yield |
| B. | Leads to maximum yield of reaction intermediate |
| C. | No effect on the reaction |
| D. | None of the mentioned |
| Answer» B. Leads to maximum yield of reaction intermediate | |
| 7. |
What happens if we use a heater for eg. steam instead of a downtherm, in the fluidized bed for production of ethylene oxide? |
| A. | Reactor may explode |
| B. | Helps in better temperature control |
| C. | Nothing will happen |
| D. | Reaction might change |
| Answer» B. Helps in better temperature control | |
| 8. |
Why is the boiling downtherm used to surround the long narrow tubes, in the fluidized bed for production of ethylene oxide? |
| A. | Give good temperature control |
| B. | Help in temperature fluctuations |
| C. | Fasten the reaction process |
| D. | None of the mentioned |
| Answer» B. Help in temperature fluctuations | |
| 9. |
Which kind of flow is preferred in the fluidized reactor for production of ethylene oxide? |
| A. | Plug flow |
| B. | Batch reactor |
| C. | Mixed flow |
| D. | Cross flow |
| Answer» B. Batch reactor | |
| 10. |
What is the main reason for using solid catalyst gas phase reactions in fluidized bed? |
| A. | Temperature control |
| B. | Increase desired product to side product |
| C. | Reduction in hotspots of catalyst |
| D. | All of the mentioned |
| Answer» E. | |