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In the metallurgy of aluminium...

In the metallurgy of aluminium

A

`AI^(3+)` is oxidised to `AI(s)`

B

graphite anode is oxidised to carbon monoxide and carbon dioxide

C

oxidation state of oxygen changes in the reaction at anode

D

oxidation state of oxygen changes in the overall reaction involved in the process

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ALLEN-METALLURGY-EXERCISE -04
  1. In the extraction of copper from its sulfide ore, the metal is formed ...

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

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  3. In the metallurgy of aluminium

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

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

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

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

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

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  9. Which of the following options are correct ?

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

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

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

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  13. Common impurities present in bauxite are …….

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

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  15. Which of the following reaction occur during calcination ?

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

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

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

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  19. Which of the following statements are correct?

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  20. Extraction of chlorine from brine is based on

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