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Which of the following reduction reactio...

Which of the following reduction reactions are actually employed in commercial extraction of metals ?

A

`Fe_(2)O_(3)+ 2Al to Al_(2)O_(3)+2Fe`

B

`Cr_(2)O_(3)+2Al to Al_(2)O_(3)+2Cr`

C

`2Na[Au(CN)_(2)]+Zn to Na_(2)[Zn(CN)_(4)]+2Au`

D

`Cu_(2)S+PB to Cu+PbS darr`

Text Solution

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The correct Answer is:
B, C
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VK JAISWAL ENGLISH-METALLURGY-One OR MORE ANSWERS IS/ ARE CORRECT
  1. Of the following reduction processes, correct processes are :

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  2. In the extraction of aluminium metal, one of the process is summarised...

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  3. During the production of iron and steel.

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  4. The smelting of iron in a blast furnace involves the following process...

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  5. For which of the following metals can be extracted by aluminothermic p...

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  6. For which of the following metal, the carbon reduction cannot be used ...

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  7. The advantage(s) of using carbon to reduce a number of oxides and othe...

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  8. The disadvantage of carbon reduction method are :

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  9. Which of the following metal (s) is /are commercially extracted by sel...

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  10. Which of the following is / are correctly matched ?

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  11. The funciton of adding cryolite in the electrolytic reduction of alumi...

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  12. Which of the following reduction reactions are actually employed in co...

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  13. The main reaction occuring in blast furnance during extraction of iron...

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  14. Which of the following are true for electrolytic extraction of alumini...

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  15. Select correct statement regarding silver extraction process .

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  16. Aluminothermy used for the spot welding of large iron structures is ba...

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  17. Highly electropositive metals can not be extracted by carbon reduction...

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  18. Which of the following reaction in the blast furnace is / are endother...

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  19. The funace lining in steel manufacture consists of :

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  20. Pick up the correct statement(s) :

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