MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Mass Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find the feed composition of more volatile component by analysing the table below. Hint: can neglect pre-heater. |
| A. | 0.45 |
| B. | 0.575 |
| C. | 0.6 |
| D. | 0.65View Answer |
| Answer» C. 0.6 | |
| 2. |
Find the distillate and the residue rates in mole/hr, if the feed rate is 100 mol/hr; The compositions of feed, distillate and residue in terms of mole fraction are 0.65, 0.9 and 0.2. |
| A. | 36,64 |
| B. | 64,36 |
| C. | 20,80 |
| D. | 80,20 |
| Answer» C. 20,80 | |
| 3. |
Find the heat given( in KJ) to the feed for the flash vaporization process if the ratio of residue to the distillate is 0.65 and the enthalpy of feed, distillate and the residue are 500, 800 and 200 KJ/kmol respectively. The feed rate is 100 kmol/hr. |
| A. | 4343 |
| B. | 5353 |
| C. | 6363 |
| D. | 7373 |
| Answer» D. 7373 | |
| 4. |
Find the X and Y from the flash column given below |
| A. | X-more volatile, Y-less volatile |
| B. | X-less volatile, Y- more volatile |
| C. | X-non volatile, Y-less volatile |
| D. | X-non volatile, Y-more volatile |
| Answer» B. X-less volatile, Y- more volatile | |
| 5. |
FIND_THE_DISTILLATE_AND_THE_RESIDUE_RATES_IN_MOLE/HR,_IF_THE_FEED_RATE_IS_100_MOL/HR;_THE_COMPOSITIONS_OF_FEED,_DISTILLATE_AND_RESIDUE_IN_TERMS_OF_MOLE_FRACTION_ARE_0.65,_0.9_AND_0.2.?$ |
| A. | 36,64 |
| B. | 64,36 |
| C. | 20,80 |
| D. | 80,20 |
| Answer» C. 20,80 | |
| 6. |
Find the heat given( in KJ) to the feed for the flash vaporization process if the ratio of residue to the distillate is 0.65 and the enthalpy of feed, distillate and the residue are 500, 800 and 200 KJ/kmol respectively. The feed rate is 100 kmol/hr? |
| A. | 4343 |
| B. | 5353 |
| C. | 6363 |
| D. | 7373 |
| Answer» D. 7373 | |
| 7. |
Express the flash vaporization |
| A. | Single stage operation |
| B. | Multi component operation |
| C. | Still operation |
| D. | None of the mentioned |
| Answer» B. Multi component operation | |
| 8. |
What happens to the liquid after preheating when enter to the cyclonic flash drum? |
| A. | Starts to evaporate |
| B. | Split with centrifugal force |
| C. | Comes out in residue |
| D. | None of the mentioned |
| Answer» C. Comes out in residue | |
| 9. |
Find the ratio of distillate to residual flow rates, if a binary mixture containing 65% of more volatile component while the distillate and the residue compositions are 90% and 30%. |
| A. | 0.4 |
| B. | 1.4 |
| C. | 2.4 |
| D. | 3.4 |
| Answer» D. 3.4 | |
| 10. |
Binary mixture of 100 kmol/hr enters into a flash drum has equimolar composition. The distillate obtained is 60 kmol/hr and the enthalpy of distillate, residue and feed are 500 KJ/kmol, 200 KJ/kmol and 400 KJ/kmol. Find the bottom flow rate in kmol/hr. |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» D. 40 | |
| 11. |
The feed is directly passed to the flash vaporization column |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Flash vaporization is a |
| A. | Equilibrium distillation |
| B. | Differential distillation |
| C. | Simple distillation |
| D. | None of the mentioned |
| Answer» B. Differential distillation | |