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This mock test of Test: Fundamentals of Diffusive & Convective Mass Transfer for Mechanical Engineering helps you for every Mechanical Engineering entrance exam.
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QUESTION: 1

In a mass transfer process of diffusion of hot smoke in cold air in a power plant, the temperature profile and concentration profile will become identical when

Solution:

which relates the temperature field with the concentration field and is ratio of a and D, which govern the transport of energy and mass respectively.

QUESTION: 2

If heat and mass transfer takes place simultaneously, then the ratio of heat transfer coefficient to mass transfer coefficient is a function of the ratio of

Solution:

Analogy of heat and mass transfer is given by Sh = 0.023 Re^{0. 8} Sc^{0.33}

QUESTION: 3

The relative magnitudes of heat and mass diffusion in the thermal and concentration boundary layers are represented by

Solution:

QUESTION: 4

Which of the following relations are true for identical molecular diffusivities of momentum, heat and mass

Solution:

QUESTION: 5

All of the following involves simultaneous heat and mass transfer, except

Solution:

QUESTION: 6

The surface hardening of a mild steel component by the diffusion of carbon molecules is a

Solution:

QUESTION: 7

Schmidt number is ratio of which of the following:

Solution:

QUESTION: 8

Which of the following is a non - dimensional number generally finds application in mass transfer problem

Solution:

QUESTION: 9

Fick’s law of diffusion interms of mass fraction can be written as (where CA = mass fraction)

Solution:

QUESTION: 10

For complete similarity in momentum, heat and mass transfer we should have

Solution:

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