MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
Which dryer used radiation for drying? |
| A. | Spray dryer |
| B. | Drum dryer |
| C. | Flash dryer |
| D. | Microwave dryer |
| Answer» E. | |
| 2. |
What is the use of a high pressure nozzle or a whirling disk in a spray dryer? |
| A. | Increasing contact time |
| B. | Decreasing contact time |
| C. | Agitation |
| D. | Atomization |
| Answer» E. | |
| 3. |
With what is the feed introduced in the spary dryer? |
| A. | Spray |
| B. | Atomizer |
| C. | Nucleator |
| D. | Heat exchanger |
| Answer» C. Nucleator | |
| 4. |
Heat sensitive or easily oxidizable materials are dried by: |
| A. | Flash dryer |
| B. | Drum dryer |
| C. | Fluidized bed dryer |
| D. | Rotary dryer |
| Answer» B. Drum dryer | |
| 5. |
How the liquid does gets separated in freeze dryer? |
| A. | Boiling |
| B. | Distillation |
| C. | Freezing and crystallization |
| D. | Evaporation |
| Answer» D. Evaporation | |
| 6. |
Which materials are not used in drying in a freeze dryer? |
| A. | Seafood |
| B. | Fruits |
| C. | Pharmaceuticals |
| D. | Dyes |
| Answer» E. | |
| 7. |
What is the drum dryer called if it is open to the atmosphere? |
| A. | Open dryer |
| B. | Box dryer |
| C. | Trough dryer |
| D. | Trench dryer |
| Answer» D. Trench dryer | |
| 8. |
How is heating achieved in drum dryers? |
| A. | By heating the drums |
| B. | By conduction |
| C. | By passing steam through hollow screws |
| D. | By passing steam through the conveyer belt |
| Answer» D. By passing steam through the conveyer belt | |
| 9. |
When are drum dryers used? |
| A. | When the material is too thick for spray dryer and too thin for rotary dryer |
| B. | When the material is too thick for rotary dryer and too thin for spray dryer |
| C. | When the material is not biodegradable |
| D. | When large crystal size is to be obtained |
| Answer» B. When the material is too thick for rotary dryer and too thin for spray dryer | |
| 10. |
Why direct heating by hot air cannot be done in some cases? |
| A. | The material can degrade |
| B. | High temperature not required |
| C. | Low temperature not required |
| D. | Conduction gives best results |
| Answer» B. High temperature not required | |