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The correct Answer is:
B
Roasted mass obtained from roasting step is called
matte . ( 98 `% Cu_2 S + 2% Fe S`)
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DISHA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE -1: CONCEPT APPLICATOR
  1. All ores are minerals while all minerals are not ores because :

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  2. Consider the following reaction at 1000^(@)C (A) Zn (s) + (1)/(2) O...

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  3. Correct match is:

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  4. Select correct statement:

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  5. By which process Pb and Sn are extracted respectively are:

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  6. Which of the following faction is of no significance for roasting sul...

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  7. When copper pyrites is roasted in excess of air, a mixture of CuO + Fe...

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  8. Sulphide ores of metals are usually concentrated by both floatation pr...

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  9. Calcination is the process in which

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  10. Extraction of zinc from zinc blende is achieved by

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  11. In froth flotation process many chemicals (frother, collector, activat...

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  12. In the metallurgy of Zn the Zn dust obtained from roasting and reducti...

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  13. A sulphide ore is first converted into its oxide before reduction. Thi...

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  14. Carbon and CO gas are used to reduce which of the following pairs of m...

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  15. While extracting an element from its ore, the ore is grind and leached...

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  16. Consider the following statements - In the aluminothermite process,...

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  17. Which statement is correct?

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  18. Aluminium is prepared in large quantities by

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  19. The incorrect statement among the following is

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  20. Select the property which forms the basis of hydrometallurgical proces...

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