Extractive Metallurgy MCQ Questions and Answers

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Enhance your knowledge of Extractive Metallurgy with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Extractive 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-5 section-1

The reductant used in the extraction of magnesium from calcinated dolomite via Pidgeon's process is

A) pure carbon B) pure silicon C) ferrosilicon D) ferromanganese

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Thiobacillus ferroxidans is used in

A) bacterial leaching in acidic medium B) bacterial leaching in alkaline medium C) bacterial leaching of cuprite ore D) pressure leaching using ammoniacal solution

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Identify the metal that can not be produced by carbothermic reduction.

A) Iron B) Lead C) Tin D) Silver

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Match the following phenomena with the corresponding extraction related processes.

P. Anode effect	1. Cu extraction
Q. Formation of scaffolds	2. Blastfurnace
R. Formation of white metal	3. Hydrocyclone
S. Classification	4. Al extraction

A) P-1, Q-2, R-3, S-4 B) P-3, Q-4, R-1, S-2 C) P-4, Q-3, R-2, S-1 D) P-1, Q-2, R-4, S-3

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Percentage of copper present in concentrated copper sulphide ore is

A) 0.5 - 2% B) 10 - 15% C) 15 - 35% D) None of these

Discuss

Answer & Solution

Answer: Option C

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Match the following:

Group 1	Group 2
P. Flash smelting	1. Tungsten
Q. Blast furnace	2. Aluminium
R. Reduction by hydrogen	3. Copper
S. Fused salt electrowinning	4. Lead

A) P-3, Q-4, R-2, S-1 B) P-4, Q-3, R-2, S-1 C) P-3, Q-4, R-1, S-2 D) P-1, Q-2, R-3, S-4

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The most abundant metal present in the earth's crust is

A) iron B) copper C) titanium D) aluminium

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In the Bayer process, bauxite is digested under pressure using

A) H₂SO₄ B) NaOH C) NH₃ D) HCl

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Ores of magnesium are

A) Carnallite: MgCl₂.KCl.6H₂O B) Olivine: - MgO₂SiO₄ C) Sarpentine: Mg₃Si₂O₇ D) All are correct

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Answer & Solution

Answer: Option D

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Speisses is a mixture of the following:

A) Arsenides of heavy metals B) Antimonides of heavy metals C) Arsenides and antimonides of heavy metals D) Iron, cobalt and nickel

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Extractive Metallurgy MCQ Questions and Answers | Metallurgical Engineering