Question Bank • QB_SUB_DFE_MSD_001 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Mass Transfer, Fick's Law & Convective Diffusion

Subtopic: Sherwood and Schmidt numbers physical meaning

Question Statement:

The Schmidt number ($Sc$) in mass transfer is analogous to which dimensionless number in heat transfer?

Options:

  • (A) Prandtl number ($Pr$)
  • (B) Nusselt number ($Nu$)
  • (C) Reynolds number ($Re$)
  • (D) Grashof number ($Gr$)

Answer Key:

A

Step-by-Step Solution & Explanation

Schmidt number $Sc = \frac{\nu}{D_{AB}}$ represents kinematic viscosity divided by mass diffusivity, directly analogous to Prandtl number $Pr = \frac{\nu}{\alpha}$.
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