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Iron Making in Metallurgy MCQ Questions and Answers | Metallurgical Engineering

Enhance your knowledge of Iron Making in Metallurgy with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Iron Making in Metallurgy are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-6 section-1

51
The product of a commercial direct reduction process is
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Answer & Solution
Answer: Option C
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52
Basicity of super-fluxed sinter is . . . . . . . .
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Answer & Solution
Answer: Option D
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53
Desulfurisation of hot metal is favoured by
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Answer & Solution
Answer: Option D
Solution:
Desulfurisation is the process of removing sulphur from hot metal (usually molten iron) to improve its quality.

This process is favoured by a reducing atmosphere because an oxidising environment can lead to reversion of sulphur back into the metal.

A basic slag (rich in lime, CaO) reacts with sulphur to form calcium sulphide (CaS), which is stable and can be easily removed.

Thus, a reducing and basic slag environment promotes maximum sulphur removal by encouraging the formation and retention of CaS in the slag phase.

Therefore, Option D is the correct answer as it provides the most favourable conditions for desulfurisation.
54
An iron blast furnace produces hot metal containing 95% Fe. The iron ore charged into the furnace contains 95% Fe2O3 and the rest is gangue. Assume that all the iron in the ore goes to hot metal. The amount of iron ore (in kg) required for producing 1000 kg of hot metal is (Atomic weight of Fe = 56 g mol-1 and that of Fe2O3 = 160 g mol-1)
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Answer: Option B
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55
In an iron blast furnace, the sinter is added in preference to iron ore lumps because, sinter
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Answer: Option A
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56
Match the following blast furnace reactions with the regions where they take place. (Note that the underlined elements are present in the hot metal and the species in the parenthesis belong to slag phase).
P. Fe3O4 + CO = 3FeO + CO2 1. Hearth
Q. C + 0.5 O2 + CO 2. Tuyer
R. y . Fe + c = Feyc 3. Stack
S. C + (CaO) + S = (CaS) + CO 4. Bosh
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Answer & Solution
Answer: Option A
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57
Solid raw materials required to produce a ton of pig iron is about . . . . . . . . tons
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Answer: Option A
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58
For efficient performance of a blast furnace, the extent of reduction of lustite should be
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Answer: Option C
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59
Desulfurisation of molten pig iron outside the blast furnace is carried out by the
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Answer: Option A
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60
Match the processes for alternate methods of producing iron in Group 1 with the type of furnaces listed in Group 2.
Group 1 Group 2
P. MIDREX 1. Rotary kiln
Q. SL/RN 2. Retort
R. Echevarria 3. Shaft furnace
S. FLOR 4. Fluidised bed
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Answer & Solution
Answer: Option A
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