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Is it possible to extract aluminium by e...

Is it possible to extract aluminium by electrolytic reduction of `Al_(2)O_(3)` ? Explain with reasons.

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CHHAYA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE (SHORT ANSWER-TYPE QUESTIONS)
  1. Is carbon a suitable reducing agent for all metal oxides? Give reason.

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  2. Differentiate between hydrometallurgy and electrometallurgy with suita...

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  3. Is it possible to extract aluminium by electrolytic reduction of Al(2)...

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  4. Is it possible to extract Al by the electrolysis of an aqueous solutio...

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  5. Copper is obtained by roasting its sulphide ore - explain.

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  6. Discuss the thermodynamic principles of metallurgy.

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  7. Explain why the following reaction, although thermodynamically feasibl...

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  8. Discuss the limitations of Ellingham diagram.

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  9. Name the precious metals in anode mud? Unlike copper, these metals do ...

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  10. The (C,CO) line on the Ellingham diagram slopes downwards. Give reason...

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  11. The (Co, CO(2)) line on the Ellingham diagram slopes upwards. Give rea...

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  12. Write the reactions taking place in different zones in the blast furna...

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  13. In metallurgy, the sulphide ore of copper is partly roasted. Why?

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  14. How can ZnS be separated from a mixture of PbS and ZnS?

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  15. Mention an important use of the thermite process.

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  16. What is the difference between carbon reduction and electrolytic reduc...

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  17. Aluminium reduces Cr(2)O(3) to Cr, but chromium cannot reduce Al(2)O(3...

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  18. What is vapour phase refining ? Explain with an example.

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  19. Give an example of extraction of a metal both by oxidation and reducti...

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  20. CO is a more effective reducing agent than C (coke) below 983K, but C ...

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