Extractive Metallurgy — Part 1 MCQs with Explanations

magnesium reduction of TiCl4 is the correct answer to “Titanium is produced by”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Both A and R are correct and R is the correct reason for A is the correct answer to “Given the following assertion 'A' . and the reason 'R' the correct option is Assertion A: In Bayer's process, high pressure is used to dissolve alumina from bauxite. Reason R: Pressure increases the boiling point of water.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

All are correct is the correct answer to “Characteristics of Zinc meta”. 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 type of reagent used in floatation in Group 1 with reagent in Group 2 . Group 1 Group 2 P. Collector 1. Pine oil Q. Regulator 2. Copper sulphate R. Activator 3. Sodium ethyl xanthate S. Frother 4. Lime”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

elimination of a more reactive metal from molten metal by preferential oxidation is the correct answer to “The process of cementation involves”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Fused Salt is the correct answer to “The following metals such as Mg, Al and Na is used to extract from”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Side blown with multiple tuyer is the correct answer to “A conventional (Pierce-Smith) copoer converter is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Castner is the correct answer to “Who has practically demonstrated the electrolysis of sodium hydroxide”. 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 processes given in Group I with the corresponding metals in Group 2 . Group 1 Group 2 P. Matte smelting 1. Lead Q. Cyanide leaching 2. Copper R. Carbothermic reduction 3. Gold S. Fused salt electrolysis 4. Aluminium”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-2, Q-1, R-4, S-3 is the correct answer to “Match the unit processes in Group 1 with the objectives in Group 2 . Group 1 Group 2 P. Leaching 1. Precipitation of metal in aqueous solution Q. Cementation 2. Selective dissolution of metal R. Roasting 3. Conversion of mattee to metal S. Converting 4. Conversion of sulfide to oxide 5. Separation of metal from slag”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

1200 - 1400 is the correct answer to “How much range of sintering temperature (°C) is generally used for Zinc sulphate”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

90% is the correct answer to “In Bayer Process, how much % of the gibbsite is converted into aluminum oxide”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

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

Bubble humidified argon gas through the melt is the correct answer to “Which of the following is a suitable method to remove hydrogen from molten Aluminium”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Both A and B is the correct answer to “For electrorefining of Al which statement is correct”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

both a and r are true, and r is the reason for a is the correct answer to “Determine the correctness or otherwise of the following Assertion: For the extraction of metal values from their sulphide concentrates by hydrometallurgical route, leaching with oxygen under high pressure is used. Reason: Presence of oxygen under high pressure causes roasting of sulphides, which helps in leaching of the values.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

remove hydrogen is the correct answer to “Phosphorous is added to copper melt to”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

oxide only is the correct answer to “The product(s) of roasting of a sulfide ore is (are)”. 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 entities in Column 1 with the corresponding processes in Column 2 . Column 1 Column 2 P. Xanthate salts 1. Extraction of AI Q. Thiobacillus Ferrooxidans 2. Flotation R. Hydrocyclone 3. Classification S. Anode effect 4. Bacterial Leaching”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

All are correct is the correct answer to “What are the advantages of ISP of Zn extraction”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P, R and S is the correct answer to “Identify the correct combination of the following statements. P. Bessemer converter can be used in copper smelting. Q. The Mond process for nickel involves reaction of metal with H 2 gas. R. Roasted ZnS concentrates can be smelted in a blast furnace. S. Magnesium metal can be produced by electrolysis of sea water.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

All of these is the correct answer to “Which elements may be detected by magnetic methods”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Cassiterite: SnO2 is the correct answer to “Ores of Tin are”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

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

P-3, Q-5, R-4, S-1 is the correct answer to “Match the metal in Group 1 with the corresponding ores in Group 2 . Group 1 Group 2 P. Lead 1. Columbite Q. Zinc 2. Cassiterite R. Uranium 3. Galena S. Niobium 4. Pitchblende 5. Sphalerite”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

550 is the correct answer to “In Zinc recovery system, the zinc containing lead pumped from condensed at a temperature (°C)”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

tin is the correct answer to “Cassiterite is an important source for”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-4, Q-1, R-3, S-2 is the correct answer to “Match the metallurgical processes in Group 1 with their corresponding reactors type in Group 2 . Group 1 Group 2 P. Roasting of sulfide concentrate 1. Pneumatic reactor Q. L.D. steel making 2. Retort R. Dwight-Lloyd sintering 3. Travelling grate reactor S. Zinc extrrction 4. Fluidised bed reactor”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

ferrosilicon is the correct answer to “In Pidgeon process, the reducing agent used is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

a significant increase in production rate is the correct answer to “The major advantage of using flash roasters over multi hearth roasters is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

P-4, Q-1, R-2, S-3 is the correct answer to “Match the following metals in Group 1 with their production methods in Group 2 . Group 1 Group 2/strong> P. Titanium 1. Mend's process Q. Nickel 2. Pidgeon's process R. Magnesium 3. Imperial smelting S. Zinc 4. Kroll's process 5. Cynidation”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Collector is the correct answer to “Which types of chemicals opposes the action of collector by rendering the mineral surface”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

zinc is the correct answer to “Cadmium in zinc leach liquor is removed by cementation using”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Sphalerite is the correct answer to “Zn is commercially extracted from which of the following minerals”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

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

side blown is the correct answer to “Traditional copper converters are”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

250 is the correct answer to “According to geological survey of India that India had a potential reserve of about . . . . . . . . million ton of bauxite which contain alumina of more than 50%.”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Al-Al2O3 Iine is too low in the Ellingham diagram and needs excessively high temperature is the correct answer to “Aluminium is not commercially produced by carbon-thermic reduction primarily, because”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

Khetri is the correct answer to “Copper deposits are found in India at the following location:”. This question is standard in competitive examination syllabi for Extractive Metallurgy.

ferrosilicon is the correct answer to “The reductant used in the extraction of magnesium from calcinated dolomite via Pidgeon's process is”. This question is standard in competitive examination syllabi for Extractive Metallurgy.