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NCERT-GENERAL PRINCIPLES AND PROCESSESS OF ISOLATION OF ELEMENTS -Exercise
- Which of the ores mentioned in Table 6.1 can be concentrated by magnet...
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- What is the significance of leaching in the extraction of aluminium?
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- The reaction Cr2O3+2AltoAl2O3+2Cr (triangleG^(ɵ)=-421kJ)) Is therm...
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- It is true that under certain condition, Mg can reduce Al2O3 and Al ca...
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- Copper can be extracted by hydrometallurgy but not zinc because
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- What is the role of depressant in froth floatation process?
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- Why is the extraction of copper from pyrites more difficult than that ...
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- Explain: (i). Zone refining (ii). Column chromatography.
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- Out of C and CO, which is a better reducing agent at 673K?
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- Name the common elements present in the anode mud in electrolytic refi...
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- Write down the reactions taking place in different zones in the blast ...
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- Write down the chemical reactions taking place in the extraction of zi...
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- State the role of silica in the metallurgy of copper.
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- Which method of refining may be more suitable if element is obtained i...
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- Which method of refining will you suggest for an element in which impu...
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- Describe a method for refining nickel.
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- How can you separate alumina from silica in a bauxite ore associated w...
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- Giving examples differentiate between roasting and calcination.
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- How is ‘cast iron’ different from ‘pig iron”?
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- Differentiate between “minerals” and “ores”.
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