Metallurgical Engineering
GATE MT concept:basic-oxygen-furnace PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:basic-oxygen-furnace
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 1–5 of 5. Imported answers require independent review unless marked reviewed.
Question 38
Open questionMTMCQ2 marksNeeds review
For supersonic O
jet in basic oxygen furnace steelmaking, choose the correct combination from the following:(1) Converging-diverging nozzle
(2) Diverging-converging nozzle
(3) O
velocity greater than sound velocity at nozzle throat (Mach number > 1)
(4) O
velocity equal to sound velocity at nozzle throat (Mach number = 1)
(5) Exit O
jet pressure ≥ atmospheric pressure
(6) Exit O
jet pressure < atmospheric pressureYour answerChoose one option.
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Open questionMTMCQ1 markNeeds review
Which one of the following elements has the slowest removal rate from hot metal in basic oxygen furnace (BOF) steelmaking?
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 32
Open questionMTMCQ2 marksNeeds review
Match the processes in Column I with the most appropriate mechanisms in Column II.
Column I
(P) Blast furnace iron making process
(Q) Hall-Heroult's process
(R) Basic oxygen furnace steel making process
(S) Kroll's process
Column II
Metallothermic reduction
Oxidation
Carbothermic reduction
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 54
Open questionMTNAT2 marksNeeds review
A Basic Oxygen Furnace operator, at the end of oxygen blow, measures the dissolved oxygen content in the steel as 0.03 wt.% and the steel temperature as 1800 K. The carbon content [C] in the steel is ______ wt.% (round off to two decimal places).
Assume:
Equilibrium between dissolved carbon [C], dissolved oxygen [O], and CO (gas) at 1 atmosphere.
Henry’s law is valid for both [C] and [O]
Given:
[ C ]
+ [ O ]
→ (CO)
R = 8.314 J·mol
·K
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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 5
Open questionMTMCQ1 markNeeds review
Arrange the following in the correct sequence of operations in an integrated steel plant:
i. Basic Oxygen Furnace (BOF)
ii. Blast Furnace (BF)
iii. Ruhrstahl Heraeus Degasing Process (RH)
iv. Ladle Furnace Process (LF)
Your answerChoose one option.
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