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Process of heating ore is air to remove ...

Process of heating ore is air to remove sulphur is:

A

Calcination

B

Roasting

C

Zone refining

D

Liquation

Text Solution

Verified by Experts

The correct Answer is:
B
Roasting is a process of heating the concentration at (generally sulphide ore) strongly in the excess of air or `O_(2)` below its melting point. During roasting impurities of Sb,P and S escape as their volatile oxides
`S(s) + O_(2)(g) rarr SO_(2)(g)`
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PHYSICS WALLAH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Level II
  1. Which of the following is not the ore of aluminium?

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  2. Chemical leaching is useful in the concentration of:

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  3. Process of heating ore is air to remove sulphur is:

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  4. When limestone is heated CO(2) gas is liberated. In metallurgy, this p...

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  5. Which of the following metals is obtained by the self reduction proces...

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  6. Self-reduction of Cu(2)S to Cu can be carried out in.

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  7. Identify the metal M whose extraction is based on the following reacti...

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  8. Cyanide solution is used in the extraction of

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  9. Ellingham diagram represents:

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  10. Which of the following reactions represents the smelting process?

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  11. The reaction 2PbS + 3O(2) rarr 2PbO + 2SO(2) used is the extractive me...

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  12. The iron obtained from the blast furnace is called:

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  13. Which of the following fluxes is used to remove acidic impurities in ...

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  14. The metal which is obtained from both sea-water and ore from the earth...

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  15. Which metal is extracted using a hydrometallurgical process involving ...

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  16. Which of the following metals cannot be extracted by the carbon reduct...

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  17. Electrolyte reduction method is used in the extraction of

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  18. In haematite extraction, limestone is used as

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  19. Aluminium metal is purified by:

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  20. High purity copper metal is obtained by

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