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All ores are minerals, but all minerals ...

All ores are minerals, but all minerals are not ores. Why?

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Minerals : The natural materiais in which the metals or their compounds occur in the earth are called minerals. In other words, metals are extracted from minerals. But every minerals is not suitable for the extraction of the metal. Ore : The mineral from which the metal is conveniently and economically extractèd is called an ore. Thus all orés are minerals, but all mirierals are not ores.
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V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
  1. Giving examples, differentiate between 'roasting' and 'calcination'.

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  2. How is 'cast iron ' different from 'pig iron'?

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  3. All ores are minerals, but all minerals are not ores. Why?

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  4. Why copper matte is put in silica lined converter?

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  5. Alumina is mixed with cryolite and subjected to electrolysis to extrac...

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  6. How is leaching carried out in case of low grade copper ores?

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  7. Why is zinc not extracted from zinc oxide through reduction using CO?

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  8. The value of Deltar G for formation of Cr2 O3 is -540 kJmol^-1 and th...

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  9. Out of C and CO, which is a better reducing agent for ZnO?

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  10. The choice of a reducing agent in a particular case depends on thermod...

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  11. Name the process from which chlorine is obtained as a by-product.What...

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  12. What is the role of graphite rod in the electrometallugy of aluminium?

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  13. Outline the principles of refining of metals by the following methods....

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  14. Predict conditions under which Al might be expected to reduce MgO

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  15. All ores are minerals, but all minerals are not ores.Is this statement...

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  16. Explain the term gangue,flux and slag.

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  17. An oxide ore A has a magnetic oxide B and SiO2 as the chief impur...

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  18. Suggest methods for concentration of the following ores?1.ZnS 2.Fe2 O...

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  19. Given below are the names of a few ores. Classify them as oxide ores, ...

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  20. Some metallic compounds /ores are given below [ZnS, .Al2 O3 .2 H2 O,...

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