Metallurgical Engineering
GATE MT topic:materials-science PYQs
Build your understanding with focused practice from past exam papers.
Questions 561–570 of 650. Imported answers require independent review unless marked reviewed.
Question 31
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Match the four tensile stress-strain curves (P,Q, R, S) with the materials listed in the box:
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Match the metal in Group 1 with the appropriate extractive process in Group 2
Group 1
P. Fe
Q. Ni
R. Al
S. Cr
Group 2
Metallothermic Reduction
Carbothermic reduction
Matte Smelting
Fused Salt Electrolysis
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Fe is produced in a reactor using pure Fe₂O₃, C and O₂. For every mole of Fe produced, 2.38 moles of C is used. The exit gas from the reactor contains CO and CO₂ in the molar ratio of 1:1. How many moles of O₂ is consumed for every mole of Fe produced?
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What is the voltage required to electrolytically refine impure copper of activity
(Raoultian standard state) to pure copper at 300 KGiven: Gas constant R = 8.314 J mol
K
, and Faraday’s constant F = 96500 C mol
.Your answerChoose one option.
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Consider the following Ordinary Differential Equation:
In a domain
, with boundary conditions
and
, pick the appropriate choice for
from the following options:Your answerChoose one option.
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Match the manufacturing processes in Group 1, with the types of cracks in Group 2:
Group 1
P. Arc welding
Q. Extrusion
R. Draw
S. Rolling
Group 2
Edge crack
Chevron crack
Surface crack
Liquation crack
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Consider a dilute substitutional solid solution of X in a metal A. The powder diffraction pattern of this alloy reveals that all the peaks have shifted to the left when compared to those for pure A (with no split of peaks). If such a solute interacts and segregates to an edge dislocation, which of the following positions around the dislocation will it preferentially occupy?
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A classroom of 20 students can be categorized on the basis of blood-types: 5 students each with “A”, “B”, “AB”, and “O” blood-types. If four students are selected at random from this class, what is the probability that each student has a different blood-type?
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If the solid-liquid interface energy increases by 10%, the energy barrier for homogeneous nucleation of a spherical solid from the liquid, will change by:
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Consider the following stress state imposed on a material:
. If the material responds elastically with a volumetric strain
, what is its bulk modulus?Your answerChoose one option.
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