Metallurgical Engineering
GATE MT topic:mass-transfer PYQs
Build your understanding with focused practice from past exam papers.
How to practice topic:mass-transfer
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–6 of 6. Imported answers require independent review unless marked reviewed.
Question 27
Open questionMTMCQ1 markNeeds review
Which one of the following options is correct?
In a convective heat transfer for laminar flow over a flat plate, Nusselt number is a function of Reynolds number and Prandtl number. Similarly, in a convective mass transfer for laminar flow over a flat plate, Sherwood number is a function of:
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 16
Open questionMTMCQ1 markNeeds review
Match the laws listed in Column I with the corresponding material properties listed in Column II
Column I
(P) Hooke’s law
(Q) Fick’s law
(R) Fourier’s law
(S) Darcy’s law
Column II
(1) Thermal conductivity
(2) Young’s modulus
(3) Permeability
(4) Diffusivity
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 37
Open questionMTMCQ2 marksNeeds review
Match the transport processes in Column I with the relationships in Column II.
Column I
(P) Molecular momentum transport
(Q) Molecular mass transport
(R) Molecular energy transport
(S) Radiation energy transport
Column II
(1) Stefan-Boltzmann law
(2) Newton’s law of viscosity
(3) Fick’s law
(4) Fourier law
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Open questionMTMCQ1 markNeeds review
Consider electrodeposition of copper on a copper electrode from an aqueous solution containing
CuSO₄. Given: Faraday constant,
per gram equivalent. Assume transport of reactant is rate limiting, and mass transfer coefficient is
. The limiting current density (in
) isYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 42
Open questionMTNAT2 marksNeeds review
A 50 mm (diameter) sphere of solid nickel is oxidized in a gas mixture containing 60% argon and 40% oxygen by volume. The rate of oxidation of nickel is controlled by the rate of transport of oxygen through the concentration boundary layer. The rate of oxidation (in moles of nickel per minute (mol/min), rounded off to two decimal places) is ________.
Given: Total pressure = 1 atm, Temperature = 1173 K; Concentration of oxygen at the surface of the solid = 0; Boundary layer mass transfer coefficient = 0.03
; Universal gas constant,
= 8.205
. Assume ideal gas behavior.Log in to check the answer
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Open questionMTMCQ1 markNeeds review
The rate of dissolution of Al particles in liquid steel is proportional to concentration difference (ΔC). ΔC is defined by:
(Given: (i) C_b = bulk concentration of dissolved Al in liquid steel, (ii) C* = saturation concentration of Al in liquid steel at the given temperature, (iii) C_m = Density of Al/Atomic weight of Al.)
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