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The process of heating the ore strongly ...

The process of heating the ore strongly in excess of air so that the volatile impurities are removed and the ore is changed to oxide is known as :

A

Calcination

B

Roasting

C

Froth floatation

D

Leaching

Text Solution

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The correct Answer is:
B
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MBD PUBLICATION-GENERAL PRINCIPLES OF ISOLATION OF ELEMENTS-QUESTION BANK
  1. The metal used in storage batteries is :

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  2. In blast furnace , the cup and cone arrangement is used :

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  3. The process of heating the ore strongly in excess of air so that the v...

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  4. Liquid crystals are best used in :

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  5. The existence of two or more crystalline forms of the same substance i...

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  6. In the reverberatory furnace :

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  7. Two compounds having the same crystal structures and analogous formula...

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  8. Which metal is extracted by electrolytic reduction ?

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  9. Refractory materials are used for the construction of furnaces because...

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  10. Roasting is generally done in case of :

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  11. Cupellation process is used in he metallurgy of :

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  12. Crystalline metal can be transformed into metallic glass by :

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  13. An alloy is :

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  14. The electrolytic method of reduction is employed for the preparation o...

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  15. Electrometallurgical process ( electrolysis of fused salt) is employed...

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  16. The metalloid amongst the following is:

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  17. When limestone is heated, carbon dioxide is given off. This operation ...

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  18. The salt which least likely to be found in minerals is

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  19. The role of calcination in metallurgical operations is:

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  20. Which metal cannot be extracted by carbon reduction process?

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