Question Bank • QB_SUB_DFE_DCM_003 MSQ • 2 Marks

Section 7: Dairy and Food Engineering

Heat and Mass Transfer

Subtopic: Diffusive and convective mass transfer

Question Statement:

Which of the following dimensionless numbers are directly involved in analyzing convective mass transfer?

Options:

  • (A) Sherwood number ($Sh$)
  • (B) Schmidt number ($Sc$)
  • (C) Peclet number for mass transfer ($Pe_m$)
  • (D) Froude number ($Fr$)

Answer Key:

A, B, C

Step-by-Step Solution & Explanation

$Sh$ is the dimensionless mass transfer coefficient, $Sc = \nu / D_{AB}$ is the momentum-to-mass diffusivity ratio, and $Pe_m = Re \times Sc$. Froude number ($Fr$) governs gravitational open channel water flow.
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