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The main function of roasting is...

The main function of roasting is

A

To remove the volatile impurities

B

Oxidation

C

Reduction

D

to make slag

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The correct Answer is:
D
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NIKITA PUBLICATION-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-Multiple choice questions
  1. Aluminium is more reactive than iron. But aluminium is less easily cor...

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  2. Heating pyrites to remove sulphur is called

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  3. The main function of roasting is

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  4. Zone refining is a method to obtain

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  5. Van Arkel method of purification of metals involves converting the met...

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  6. Electrolytic reduction method is used fro the extraction of

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  7. When copper is placed in the atmosphere for sufficient time, a green c...

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  8. Roasting of copper pyrites is done

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  9. In the metallurgy of iron, when limestone is added to the blast furnac...

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  10. The slag obtained during the extraction of copper from coper pyrites i...

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  11. Copper matte consists of:-

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  12. Which method is based on distribution principle?

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  13. Which statement about corrosive sublimate is incorrect ?

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  14. Iron is obtained on large scale from haematite Fe(2)O(3)

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  15. Polling process us used in the purification of

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  16. Spelter is

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  17. Roasting is used during metallurgical operation using

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  18. Pig iron is converted into strrl by decreasing the amount of carbon pr...

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  19. Near the top of the blast furnace, iron oxides are reduced to …… by ca...

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  20. Hoop's process of purification of aluminium involves formation of laye...

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