McqMate
| Q. |
Pick out the wrong statement. |
| A. | In the McCabe-Thiele diagram for binary distillation, vertical feed line represents saturated liquid feed and horizontal feed line represents saturated vapour feed |
| B. | In small columns, local efficiency is larger than Murphree efficiency; in large columns local efficiency is smaller than Murphree efficiency |
| C. | For Laminar flow over a plate of length L, the local mass transfer co-efficient at a distance L from the leading edge is 1.5 × 10-2m/s. Then the average mass transfer co-efficient for the plate is 2 × 10-2m/s |
| D. | The concentration and hydrodynamic boundary layers over a flat plate are of equal thickness, if Schmidt number is equal to unity |
| Answer» C. For Laminar flow over a plate of length L, the local mass transfer co-efficient at a distance L from the leading edge is 1.5 × 10-2m/s. Then the average mass transfer co-efficient for the plate is 2 × 10-2m/s | |
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