Mass Transfer-Data Intensity 1 Multiple Questions and Answers.




31.In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ___ number ?
A. Lewis
B. Grashoff
C. Sherwood
D. None of these

32.In an absorption column, the flooding velocity for random packing is ____ that for stacked/regular packing?
A. Greater than
B. Smaller than
C. Equal to
D. None of above

33.In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed___?
A. q > 1
B. q < 1
C. q = 1
D. q = 0

34.With increase in temperature, the leaching rate increases due to___?
A. Decreased liquid viscosity
B. Increased diffusivity
C. Both A. and B.
D. None of above

35.Large scale drying of wheat is done in a _____ dryer?
A. Fluidised bed
B. Spouted bed
C. Tray
D. Vacuum rotary

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