A. K ∝ D
B. K ∝√D
C. K ∝ D1.5
D. K ∝ D2
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Related Mcqs:
- According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) ?
- A. D B. D2 C. D0.5 D. 1/D...
- Mass transfer co-efficient ‘K’ according to penetration theory varies with mass diffusivity as____________________?
- A. D0.5 B. D C. 1/D D. D1.5...
- The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = _________________?
- A. 1 B. 0.5 C. 10 D. 0...
- Penetration theory relates the average mass transfer co-efficient (K) with diffusivity D. as____________________?
- A. K ∝D B. K ∝√D C. K ∝D1.5 D. K ∝D2...
- For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is___________________?
- A. Calculated B. Unknown C. Known D. Not required...
- The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same system is_______________________?
- A. 100 B. 10 C. 5 D. 1...
- The mass transfer co-efficient for a solid sphere of radius ‘a’ dissolving in a large volume of quiescent liquid, in which „D’ is the diffusivity of solute, is _____________________?
- A. D/a B. D/2a C. Proportional to √D D. Dependent on the Reynolds number...
- If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is____________________
- A. 0 B. 1 C. 1...
- Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and ‘t’ is time) ?
- A. (De.t)1/2 B. (De/t)1/2 C. (4De/πt)1/2 D. (4De/t)...
- Mass transfer co-efficient is directly proportional to DAB according to the __________ theory?
- A. Film B. Penetration C. Surface-renewal D. None of these...
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