Question

The ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity is referred as:

(a) Nusselt number

(b) Schimdt number

(c) Sherwood number

(d) Reynolds number

Answer 1

Correct choice is (b) Schimdt number

Best explanation: Schmidt number (Sc) is a dimensionless number defined as the ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity, and is used to characterize fluid flows in which there are simultaneous momentum and mass diffusion convection processes.