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In smelting process the impurities of an...

In smelting process the impurities of an ore is removed by

A

addition of flux

B

levigation

C

addition of slag

D

liquation

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The correct Answer is:
A
To remove gangue
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Following two question have assertion followed by the reason. Answer them according to the following options. Assertion In smelting process, the roasted ore is heated with powdered coke in presence of flux. Reason Oxides are reduced to metal by carbon or CO and impurities are removed as slag.

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In roasting I. no metal impurities are removed. II. ores becomes porous III. moisture is removed. Which of the above facts are true about roasting ?

MARVEL PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Test Your Grasp
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  2. Iron is removed from cahalcopyrite as

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  3. Which of the following oxide cannot be reduced to metal by carbon ?

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  4. Brine solution on electrolysis will not give.

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  5. Which of the following steps are involved in hydrometallurgical proces...

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  6. Which method is not correct for refining of crude metals ?

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  7. Smelting involves reduction of metal oxide with

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  8. Which of the following srtatement above the advantage of masting of su...

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  9. The principal reaction in the zone of heat absorption of blast furnace...

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  10. Iron is mainly extracted by .

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  11. Electrolytic reduction of alumina to aluminium by Hall-Heroult process...

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

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  13. Which of the following statement is incorrect regarding the metallurgy...

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  14. In the metallurgy of iron, the upper layer obtained in the bottom of b...

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  15. A mineral is known as an ore of metal if the metal

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  16. Froth floatation process is used for the metallurgy of

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  17. (viii) Amongest the following groups of oxides, the group containing o...

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  18. In metallurgical processes the flux used for removing acidic impuritie...

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  19. Roasting is done generally in case of

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  20. The most common method of extraction of metals from oxide ores involve

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  21. Froth floatation process for the concentration of sulphide ore is an i...

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