MCQOPTIONS
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MCQOPTIONS
This section includes 21 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 point D moisture content. |
| A. | Bound |
| B. | Unbound |
| C. | Equilibrium |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
After the unsaturated drying completed ________ starts to evaporate.a) Boundb) Unboundc) Equilibriumd) None of the mentioned 14.Find the representation AB in the batch drying curve. |
| A. | Boundb) Unboundc) Equilibriumd) None of the mentioned 14.Find the representation AB in the batch drying curve.a) Constant drying region |
| B. | Unboundc) Equilibriumd) None of the mentioned 14.Find the representation AB in the batch drying curve.a) Constant drying regionb) Falling rate period |
| C. | Equilibriumd) None of the mentioned 14.Find the representation AB in the batch drying curve.a) Constant drying regionb) Falling rate periodc) Equilibrium moisture content |
| D. | None of the mentioned 14.Find the representation AB in the batch drying curve.a) Constant drying regionb) Falling rate periodc) Equilibrium moisture contentd) None of the mentionedView Answer |
| Answer» B. Unboundc) Equilibriumd) None of the mentioned 14.Find the representation AB in the batch drying curve.a) Constant drying regionb) Falling rate period | |
| 3. |
After critical moisture content _________ starts. |
| A. | Saturated drying region |
| B. | Unsaturated drying region |
| C. | Constant drying region |
| D. | None of the mentioned |
| Answer» C. Constant drying region | |
| 4. |
If the dry spot appears in the substance in the batch drying curve at ___________ |
| A. | Critical moisture content |
| B. | Equilibrium moisture content |
| C. | Bound moisture |
| D. | Unbound moisture |
| Answer» B. Equilibrium moisture content | |
| 5. |
The value of _________ remains constant while drying if speed and direction of gas flow never change. |
| A. | Mass transfer co-efficient |
| B. | Humidity |
| C. | Moisture |
| D. | None of the mentioned |
| Answer» B. Humidity | |
| 6. |
Find the gas phase mass transfer co-efficient for a unbound moisture to remove if the flux is 5 kg/sq.m sec and the difference in humidity of the liquid and the main stream is 0.5 units. |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 30 |
| Answer» C. 20 | |
| 7. |
The other part than the constant rate period in the Batch- Drying curve is falling rate period. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Calculate the flux (kg/sq.m sec) ifMass of dry solid = 8 kg; Wet surface area = 4 sq.m; Change in moisture content with time is 0.4 /sec; |
| A. | 0.4 |
| B. | 0.6 |
| C. | ifMass of dry solid = 8 kg; Wet surface area = 4 sq.m; Change in moisture content with time is 0.4 /sec;a) 0.4b) 0.6c) 0.8 |
| D. | 0.9 |
| Answer» D. 0.9 | |
| 9. |
Find the missing position. |
| A. | Time |
| B. | Speed |
| C. | Water vapour |
| D. | None of the mentioned |
| Answer» B. Speed | |
| 10. |
FIND_THE_GAS_PHASE_MASS_TRANSFER_CO-EFFICIENT_FOR_A_UNBOUND_MOISTURE_TO_REMOVE_IF_THE_FLUX_IS_5_KG/SQ.M_SEC_AND_THE_DIFFERENCE_IN_HUMIDITY_OF_THE_LIQUID_AND_THE_MAIN_STREAM_IS_0.5_UNITS.?$ |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 30 |
| Answer» C. 20 | |
| 11. |
If the dry spot appears in the substance in the batch drying curve at ___________$ |
| A. | Critical moisture content |
| B. | Equilibrium moisture content |
| C. | Bound moisture |
| D. | Unbound moisture |
| Answer» B. Equilibrium moisture content | |
| 12. |
The_value_of___________remains_constant_while_drying_if_speed_and_direction_of_gas_flow_never_change.$ |
| A. | Mass transfer co-efficient |
| B. | Humidity |
| C. | Moisture |
| D. | None of the mentioned |
| Answer» B. Humidity | |
| 13. |
After the unsaturated drying completed ________ starts to evaporate. |
| A. | Bound |
| B. | Unbound |
| C. | Equilibrium |
| D. | None of the mentioned |
| Answer» B. Unbound | |
| 14. |
After_critical_moisture_content___________starts. |
| A. | Saturated drying region |
| B. | Unsaturated drying region |
| C. | Constant drying region |
| D. | None of the mentioned |
| Answer» C. Constant drying region | |
| 15. |
The other part than the constant rate period in the Batch- Drying curve is falling rate period? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
Calculate the flux (kg/sq.m sec) if |
| A. | |
| B. | 0.4 |
| C. | 0.6 |
| Answer» D. | |
| 17. |
Constant drying conditions include |
| A. | Temperature constant |
| B. | Humidity constant |
| C. | Velocity constant |
| D. | All of the mentioned |
| Answer» E. | |
| 18. |
For a batch drying, the wet surface should be more compare to dry surface. |
| A. | True |
| B. | False |
| Answer» C. | |
| 19. |
For estimating the drier size it is necessary to know _________ |
| A. | Time of drying |
| B. | Heat of drying |
| C. | Speed of drying |
| D. | All of the mentioned |
| Answer» B. Heat of drying | |
| 20. |
Cabinet/ Tray driers are direct driers. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 21. |
Direct dryers are ___________ |
| A. | Batch driers |
| B. | Continuous driers |
| C. | Semi-batch driers |
| D. | None of the mentioned |
| Answer» B. Continuous driers | |