MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 Murphree stage efficiency for the following co-current operation with equilibrium leaving gas phase concentration Y*= 0.8.Where, G and L are gas and liquid flow rates Y and X are concentration in mole ratio (Y1=0.2, Y2=0.4, X1= 0.6, X2=0.8) |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | 100% |
| Answer» B. 50% | |
| 2. |
______________ is defined as the number of equilibrium stages to the number of real stages. |
| A. | Murphree stage efficiency |
| B. | Fractional overall efficiency |
| C. | Stage efficiency |
| D. | Overall efficiency |
| Answer» C. Stage efficiency | |
| 3. |
Find the value of y in an ideal single stage absorber is used to remove ammonia from gas with water as solvent. Its representation is given belowHere, y0=0.2, the molar gas flow rates of liquid and gas mixture in (moles/sec) are 4 and 2. The equilibrium relation between y and x is given by y = 0.2x. The solvent water is pure. |
| A. | 1/10 |
| B. | 1/20 |
| C. | are 4 and 2. The equilibrium relation between y and x is given by y = 0.2x. The solvent water is pure.a) 1/10b) 1/20c) 2/110 |
| D. | 2/220 |
| Answer» C. are 4 and 2. The equilibrium relation between y and x is given by y = 0.2x. The solvent water is pure.a) 1/10b) 1/20c) 2/110 | |
| 4. |
Find the number of stage(s) Where, Y- Mole Ratio of gas phase X- Mole Ratio of liquid phase |
| A. | 1 |
| B. | 2 |
| C. | 1 to 2 |
| D. | No stage |
| Answer» B. 2 | |
| 5. |
_______________IS_DEFINED_AS_THE_NUMBER_OF_EQUILIBRIUM_STAGES_TO_THE_NUMBER_OF_REAL_STAGES.?$ |
| A. | Murphree stage efficiency |
| B. | Fractional overall efficiency |
| C. | Stage efficiency |
| D. | Overall efficiency |
| Answer» C. Stage efficiency | |
| 6. |
Murphree efficiency is defined as the number of equilibrium stages to the number of real stages. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
(Yn- Yn-1)/ (Yn*-Yn-1) is |
| A. | Fractional overall |
| B. | Murphree stage |
| C. | Stage |
| D. | Tray |
| Answer» C. Stage | |
| 8. |
The main purpose of cascades is |
| A. | To get maximum conversion |
| B. | To increase mass transfer rates |
| C. | To get more efficiency |
| D. | None of the mentioned |
| Answer» C. To get more efficiency | |
| 9. |
More than one stages are interconnected to form |
| A. | Trays |
| B. | Sieves |
| C. | Cascades |
| D. | Multiple stage |
| Answer» D. Multiple stage | |
| 10. |
Ideal stages are also known as |
| A. | Equilibrium or Theoretical stages |
| B. | Equilibrium or Actual stages |
| C. | Differential or Theoretical stages |
| D. | Differential or Actual stages |
| Answer» B. Equilibrium or Actual stages | |
| 11. |
A device where two insoluble phases are brought into contact is known as |
| A. | Trays |
| B. | Stage |
| C. | Cascade |
| D. | Sieves |
| Answer» C. Cascade | |