Titanium is produced by
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Metallurgical Engineering · all questionsExtractive Metallurgy
Extractive Metallurgy
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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.
Assertion A: In Bayer's process, high pressure is used to dissolve alumina from bauxite.
Reason R: Pressure increases the boiling point of water.
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Characteristics of Zinc meta
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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 |
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The process of cementation involves
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The following metals such as Mg, Al and Na is used to extract from
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A conventional (Pierce-Smith) copoer converter is
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Who has practically demonstrated the electrolysis of sodium hydroxide
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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 |
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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 |
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How much range of sintering temperature (°C) is generally used for Zinc sulphate
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In Bayer Process, how much % of the gibbsite is converted into aluminum oxide
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Ores of copper are
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Which of the following is a suitable method to remove hydrogen from molten Aluminium?
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For electrorefining of Al which statement is correct
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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.
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.
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Phosphorous is added to copper melt to
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The product(s) of roasting of a sulfide ore is (are)
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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 |
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What are the advantages of ISP of Zn extraction
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