Metallurgical Engineering
GATE MT Material and Energy balances in metallurgical processes; Principles and processes for the extraction of non-ferrous metals – aluminium, copper and titanium. PYQs
Build your understanding with focused practice from past exam papers.
Questions 11–16 of 16. Imported answers require independent review unless marked reviewed.
Question 33
Open questionMTMCQ2 marksNeeds review
Match the reactors in Column I with the corresponding products in Column II.
Column I
(P) COREX
(Q) MIDREX
(R) Flash smelting reactor
(S) Submerged arc furnace
Column II
Sponge iron
Copper matte
Hot metal or pig iron
Ferrochrome
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Open questionMTMCQ1 markNeeds review
The common ore of titanium is
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Open questionMTNAT2 marksNeeds review
100 Metric tons of copper concentrate containing 21 wt.% Cu is to be processed in 6 months with 25 working days per month and 8 working hours per day. The concentrate is leached by sulphuric acid and electrolyzed in 10 cells arranged in series. The minimum current rating (Ampere per month per cell, rounded off to the nearest integer) is ________.
Given: Faraday constant = 96500 Coulomb per gram equivalent. Atomic weight of copper is 63.
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Open questionMTMCQ2 marksNeeds review
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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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 33
Open questionMTMCQ2 marksNeeds review
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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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 38
Open questionMTNAT2 marksNeeds review
A stoichiometric mixture of CO and pure oxygen at 1 atm and 25°C flows into a combustion reactor. The molar flow rate of CO entering the reactor is 1 kg-mol·h
. The adiabatic flame temperature (in K) for the combustion of CO with stoichiometric oxygen is __________ (answer up to two decimal places)Given:
kJ (kg-mol CO)
,
kJ (kg-mol K)
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