Mass Transfer

A. Means discarding a small fraction of circulating water to prevent and limit the concentration
of salt and impurities
B. Increases the scale forming tendencies of water
C. Is undesirable
D. All A., B. & C.

Pick out the wrong statement
A. Sherwood number in mass transfer is analogous to Nusselt number in heat transfer
B. Prandtl number in heat transfer is analogous to Schmidt number in mass transfer
C. Reynolds number in mass transfer is analogous to Grashoff number in heat transfer
D. Reynolds number remains the same in both heat and mass transfer

A. Drift
B. Blow down
C. Vapor load
D. None of these

A. Extractive
B. Azeotropic
C. Steam
D. Molecular

A. Continuous
B. Steam
C. Azeotropic
D. None of these

A. Evaporation
B. Sublimation
C. Dehydration
D. Adsorption

A. Litre
B. gm
C. Kg
D. m3

A. Same as differential distillation
B. Used for multi-component systems like crude refining
C. Same as simple distillation
D. Most useful for handling binary systems

A. The partial pressure of water vapour increases
B. The specific humidity decreases
C. The relative humidity increases
D. The relative humidity decreases

A. Penetration
B. Surface renewal
C. Film
D. None of these