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Extraction of metal from the ore cassite...

Extraction of metal from the ore cassiterite involves

A

Carbon reduction of an oxide ore

B

Self reduction of a sulphide ore

C

Removal of copper impuruty

D

Removal of iron impurity.

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The correct Answer is:
A, C, D
Aluminium is used as a reducing agent in metallurgical operations.
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-SELECTED STRAIGHT OBJECTIVE TYPE MCQS
  1. The major role of fluorpar (CaF2 ) which added in small quantities in ...

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  2. Which of the following oxides is/are amphoteric ?

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  3. Extraction of metal from the ore cassiterite involves

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  4. The carbon-based reduction method is not used in the extraction of

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  5. In the metallurgical processes, aluminium acts as

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  6. Hydrogen will not reduce

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  7. Froth floatation process may be used to increase the concentration of ...

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  8. In which of the following mineral aluminium is not present ?

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  9. An important ore of magensium is

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  10. Among the following statements the incoorect one is

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  11. In the commercial electrochemical process for aluminium extraction, th...

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  12. Which of the following process is used in the extractive metallurgy of...

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  13. Pb and Sn are extracted from their chief ore by

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  14. Which of the following ores is best concentrated by froth floatation m...

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  15. During electrolytic refining of copper, some metals present as impurit...

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  16. Heating mixture of Cu(2)O and Cu(2)S will give

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  17. Sulphide ores of metals are usually concentrated by froth floatation p...

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  18. Which of the following statements, about the advantage of roasting of ...

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  19. Extraction of zinc blende is achieved by

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  20. Which of the following factors is of no significance for roasting sulp...

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