Extractive Metallurgy — Part 2 MCQs with Explanations

bacterial leaching in acidic medium is the correct answer to “Thiobacillus ferroxidans is used in”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Silver is the correct answer to “Identify the metal that can not be produced by carbothermic reduction.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-1, Q-2, R-4, S-3 is the correct answer to “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”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

15 - 35% is the correct answer to “Percentage of copper present in concentrated copper sulphide ore is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-3, Q-4, R-1, S-2 is the correct answer to “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”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

aluminium is the correct answer to “The most abundant metal present in the earth's crust is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

NaOH is the correct answer to “In the Bayer process, bauxite is digested under pressure using”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

All are correct is the correct answer to “Ores of magnesium are”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Arsenides of heavy metals is the correct answer to “Speisses is a mixture of the following:”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Coking of coal is carried out in a shaft furnace is the correct answer to “Identify the incorrect statement with reference to unit processes in extractive metallurgy.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Both A and B is the correct answer to “Ores of Titanium are”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Pidgeon process is the correct answer to “Which types process involve for Mg Extraction”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-4, Q-3, R-2, S-1 is the correct answer to “Match the following: Group 1 Group 2 P. Fire refinning 1. Zirconium Q. Zone refinning 2. Nickel R. Refinning via carbonyl 3. Germanium S. Iodide refining 4. Copper”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Both A and B is the correct answer to “Debismuthizing of lead extraction”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-3, Q-4, R-2, S-1 is the correct answer to “Match the metals in Group 1 with the processes in Group 2 . Group 1 Group 2 P. Aluminium 1. Poling Q. Copper 2. Fused salt electrolysis R. Zinc 3. Rotary kiln process S. Iron sponge 4. Distillation”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-4, Q-2, R-3, S-1 is the correct answer to “Match the process in group 1 to its description in group 2 . Group 1 Group 2 P. COREX process 1. Decarburisation of liquid steel Q. OBM process 2. Steel making using oxygen R. Carbonyl process 3. Nickel refmning S. AOD process 4. Alternative route of liquid iron production”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 is the correct answer to “Identify the correct statement with reference to the extractive metallurgy of aluminium.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Tabling is the correct answer to “Which types of process generally take place by friction moments along wet vibrating solid surface”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Thorium is the correct answer to “Monazite deposits constitute an important source forthe following metal”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

2 - 5% is the correct answer to “The Al 2 O 3 content of cryolite in Hall-Heroult's cell is maintained between”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Lean oxide and mixed copper ore is the correct answer to “Hydrometallurgy is a process of extraction in which extraction of metal is done”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

10% is the correct answer to “Percentage of nickel present in concentrated Ni ore is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Gold is the correct answer to “Which metal is extracted by leaching”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

copper is the correct answer to “Mattee smelting is used in the extraction of”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Centrifuging is the correct answer to “If supposed speed of rotation of ball mill is too much high, then what force generally take place inside the container.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Both A and B is the correct answer to “Process of extraction of Zn is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Q and S is the correct answer to “In a roasting process, the set of conditions that favour sulphate formation from metal sulphide concentrates are. P. high temperature Q. high partial pressure of oxygen R. use of excess air S. high partial pressure of SO 3”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

All are correct is the correct answer to “What are the uses of Manganese”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-2, Q-3, R-4, S-1 is the correct answer to “Match the extraction methods in Group 1 with the metals in Group 2 . Group 1 Group 2 P. Roasting followed by carbothermic reduction 1. Ti Q. Electrolysis of fused salt 2. Pb R. Roasting followed by controlled oxidation 3. Al S. Halide process 4. Cu 5. Au”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

2.29 & 99.99 is the correct answer to “In the Gadeu Process, the purity in % and density of Aluminium”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Both A and B is the correct answer to “What are the disadvantages of Newer Process”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Zinc is the correct answer to “In the commercial production of which of the following metals, metallothermic reduction is used”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Ilmenite is the correct answer to “Which one of the following minerals is a source of titanium”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-3, Q-1, R-4, S-2 is the correct answer to “Match the metal in Group 1 with its corresponding ore in Group 2 . Group 1 Group 2 P. Ni 1. Monazite Q. Th 2. Cassiterite R. Pb 3. Penlandite S. Sn 4. Galena”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

a metal in the form of long rod is melted over a short length and molten region is made to traverse along the length of the rod is the correct answer to “Zone refinning is a process in which”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-2, Q-3, R-1, S-4 is the correct answer to “Match the following metals with their extraction processes. Group 1 Group 2 P. Gold 1. Pidgeon process Q. Titanium 2. Cyanidation R. Magnesium 3. Mond process S. Nickel 4. Kroll's process”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

All are correct is the correct answer to “Characteristics of Aluminium metal”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-4, Q-2, R-3, S-1 is the correct answer to “Match the following ores with their chemical formula. Group 1 Group 2 P. Sphalerite 1. Cu 2 S Q. Covellite 2. CuS R. Anglesite 3. PbSO 4 S. Chalcocite 4. ZnS”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-3, Q-4, R-2, S-1 is the correct answer to “Match the metals listed in Group 1 with the most. appropriate extraction routes listed in Group 2 . Group 1 Group 2 P. Al 1. Blast Furnace Q. Ti 2. Matte Srrielting R. Cu 3. Electrolysis of Fused Salts S. Fe 4. Halide Metallurgy”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Reduction is done only by sodium is the correct answer to “Which of the following statements regarding Kroll's process is not correct”. This question is standard in competitive examination syllabi for Extractive Metallurgy.