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The extraction of Au by leaching with Na...

The extraction of Au by leaching with NaCN involves both oxidation and reduction. Justify.

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ASSAM ACADEMIC CENTRE-General Principles of Processes of Isolation of Elements-Example
  1. What are depressants? How does NaCN act as depressant in preventing Zn...

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  2. Zinc and not Copper is used for the recovery of silver from the comple...

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  3. The extraction of Au by leaching with NaCN involves both oxidation and...

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  4. Why Zinc oxide can be reduced to the metal by heating with Carbon andn...

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  5. What is the role of iodine in the refining of titanium?

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  6. Describe the role of the following in the processes mentioned: NaCN in...

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  7. Describe the role of SiO2 in the extraction of Copper from Copper matt...

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  8. The extraction of Au by leaching with NaCN involves both oxidation and...

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  9. Name chief ore of iron.

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  10. Explain the role of the following in the processes mentioned: Cryolite...

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  11. Explain the role of Carbon monoxide in the purification of nickel.

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  12. Name the method used for the refining of Nickel.

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  13. Give examples differentiate between Roasting and Calcination.

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  14. Explain the role of the following in the processes mentioned: Cryolite...

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  15. Why Zinc not extracted from Zinc oxide through reduction using CO?

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  16. What is flux? What is the role of flux in the metallurgy of iron and c...

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  17. Explain the role of Carbon monoxide in the purification of nickel.

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  18. Outline the prinicples of refining of metals by the following methods....

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  19. Write the chemical equation for Mond process.

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  20. Write the chemical equation for Van Arkel method.

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