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Match the items of Column I with item of...

Match the items of Column I with item of Column II and assign the correct code.

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The correct Answer is:
C
(a) Cyanide process-extraction of Au (iv) (b) Froth floatation process - dressing of sulphide ores, ZnS (ii)
(c) Electrolytic reduction - extraction of Al (iii)
(d) Zone refining - ultrapure Ge (i)
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Match the items of Column I with items of Column II and assign the correct code: {:(ColumnI,ColumnII),((A)"Blisterred Cu",(1)"Aluminium"),((B)"Blast furnace",(2)2CU_(2)O +Cu_(2)S rarr 6Cu +SO_(2)),((C)"Reverberatory furnace",(3)Iron),((D)"Half-Heroult process",(4)FeO +SiO_(2) rarr FeSiO_(3)),(,(5)2Cu_(2)S +3O_(2) rarr 2Cu_(2)O +2SO_(2)):}

MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
  1. In the extraction of copper from its sulphide ore, the metal finally o...

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  2. 'Metals are usually not found as nitrates in their ores''. Out of the ...

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  3. Match the items of Column I with item of Column II and assign the corr...

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  4. Extraction of gold and silver involves leaching with CN^(-)ion.silver ...

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  5. Considering Ellingham diagram, which of the following metals can be us...

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  6. Which one is malachite from the following

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  7. Identify the reaction that does not take place in a blast furnace

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  8. In the alumino-thermite process, Al acts as :

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  9. In view of the signs of Delta(r)G^(@) for the following reactions : ...

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  10. Which method of purification is represented by the following equation?...

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  11. The function of potassium ethyl xanthate in froth floatation process i...

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  12. The first step in the extraction of copper from copper pyrites

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  13. The statement that is not correct is

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  14. Roasted copper pyrite on smelting with sand produces

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  15. In the correct of the Hall-Heroult process for the extraction of Al, w...

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  16. Which one of the following ores is the best concentrated by froth floa...

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  17. What is the composition of 'Copper matte'?

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  18. The complex formed when Al(2)O(3) is leached from bauxite using concen...

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  19. The metal extracted by leaching with cyanide is

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  20. Purification of aluminium is called

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