Question Statement:
Which of the following dimensionless numbers correctly represent the stated physical ratios in convective heat and mass transfer operations?
Options:
- (A) Sherwood number ($Sh = \frac{k_c L}{D_{AB}}$) represents the ratio of convective mass transfer to molecular diffusion rate.
- (B) Schmidt number ($Sc = \frac{\mu}{\rho D_{AB}} = \frac{\nu}{D_{AB}}$) represents the ratio of momentum diffusivity to molecular mass diffusivity.
- (C) Lewis number ($Le = \frac{\alpha}{D_{AB}}$) represents the ratio of thermal diffusivity to mass diffusivity.
- (D) Prandtl number ($Pr = \frac{k}{\mu c_p}$) represents the ratio of convective heat flux to radiative heat flux.