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In the extraction of copper from its sul...

In the extraction of copper from its sulfide ore, the metal is formed by the reduction of `Cu_2O` with

A

`FeS`

B

`CO`

C

`Cu_(2)S`

D

`SO_(2)`

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ALLEN-METALLURGY-EXERCISE -04
  1. A number of elements are available in earth's crust but most abundant ...

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  2. Zone refining is based on the principle that

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  3. In the extraction of copper from its sulfide ore, the metal is formed ...

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  4. Brine is electrolysed by using inert electrodes. The reaction at anode...

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  5. In the metallurgy of aluminium

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  6. Electrolytic refining is used to purify which of the following metals ...

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  7. Extraction of gold and silver involves leaching the metal with CN^(-) ...

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  8. Choose the correct option of temperature at which carbon reduces FeO t...

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  9. Below point 'A' FeO can (a)be reduced by carbon monoxide only. (b)...

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  10. For the reduction of FeO at the temperature corresponding to point D, ...

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  11. Which of the following options are correct ?

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  12. In the extraction of aluminium by Hall-heroult Process, purified Al(2)...

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  13. Which of the following statements is correct about the role of collect...

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  14. In the froth floatation process, zinc sulphide and lead sulphide can b...

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  15. Common impurities present in bauxite are …….

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  16. Which of the following ore are concentrated by froth floatation ?

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  17. Which of the following reaction occur during calcination ?

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  18. For the meallurgical process of which of the ores calcined ore can be ...

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

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  20. In which of the following method of purification, metal is converted t...

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