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Which of the following metals is obtaine...

Which of the following metals is obtained by leaching out process using a solution of `NaCN` and then precipitating the metal by addition of zinc dust?

A

Copper

B

Silver

C

Nickel

D

Iron

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Critical Thinking
  1. Froth floatation process is based on .

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  2. Froth floatation process for the concentration of ores is an illustrat...

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  3. Which of the following metals is obtained by leaching out process usin...

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  4. Roasting is a process in which ores are heated in the .

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  5. The role of calcination in metallurgical operation is

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  6. Which one of the following reactions is an example for calcination pro...

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  7. The process of calcination is generally carried out in case of .

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  8. Which of the following reactions involves the smelting process ?

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  9. In metallurgy , flux is a substance used to convert.

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  10. Which of the following is NOT an alkaline flux ?

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  11. Specific gravity of slag is

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  12. For the formation of carbon dioxide , Delta G^(@).

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  13. For the temperature at which C to CO line lie below the metal oxide li...

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  14. A newly discovered metal 'M' was found to have it graph of formation o...

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  15. Which of the following statements is INCORRECT on the basis of Ellingh...

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  16. Liquation process for refining of crude metal is used when .

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  17. During the process of polling , .

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  18. The fact that impurities are more soluble in the molten state than in ...

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  19. Inert atmosphere of argon is used during ozone refining to prevent.

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  20. Gallium arsenide is purified by .

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