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Copper pyrites , the chief ore of copper...

Copper pyrites , the chief ore of copper , is chemically :

A

`Cu_2S`

B

`CuFeS_2`

C

`CuCO_3.Cu(OH)_2`

D

`Cu_2O`

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The correct Answer is:
B
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice Questions - Level - II
  1. Serpeck's process is used for the extraction of :

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  2. Which of the following relations is correct ?

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  3. Copper pyrites , the chief ore of copper , is chemically :

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  4. Which of the following is malachite ore ?

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  5. The roasting of HgS in air produces :

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  6. The formula of siderite ore is

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  7. Copper is refined by :

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  8. which of the following is not a basic flux ?

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  9. An example of halide ore is :

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  10. The sulphide ores are generally concentrated by :

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  11. Carbon reduction method is used in the extraction of :

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  12. The process of removal of impurities form a crude metal is called :

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  13. The common depressant used in froth floatation process for separation ...

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  14. When copper ore is mixed with silica in a reverberatory furnace copper...

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  15. Which of the following reactions is an example of auto reduction ?

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  16. In the extraction of copper from its sulphide ore, the metal is formed...

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  17. Electrolytic refining is used to purify which of the following metal...

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  18. Extraction of gold and silver involves leaching the metal with CN^- io...

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  19. Coke is used in metallurgical process process chiefly as

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  20. Which of the following statement is not true ?

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