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Which of the following reaction is an ex...

Which of the following reaction is an example of autoreduction?

A

`Fe_(3)O_(4) +4CO rarr 3Fe +4CO_(2)`

B

`Cu_(2)O +C rarr 2Cu +CO`

C

`Cu^(2+) (aq) +Fe (s) rarr Cu(s) +Fe^(2+)(aq)`

D

`Cu_(2)O + (1)/(2) Cu_(2)S rarr 3Cu +(1)/(2) SO_(2)`

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ALLEN-METALLURGY-EXERCISE -04
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  2. When copper ore is mixed with silica in a reverberatory furnace, coppe...

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  3. Which of the following reaction is an example of autoreduction?

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  5. Zone refining is based on the principle that

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  6. In the exteraction of copper from its sulphide ore, the metal is fanal...

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

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  8. In the metallurgy of aluminium

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  9. Elecyroltic refining is used to purify which of the following metals?

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

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  11. Choose the correct option of temperature at which carbon reduced FeO t...

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  12. Below point 'A' FeO can

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

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  14. At the temperature corresponding to which of the points in Fig. FeO wi...

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  15. Which of the following options are correct?

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  16. In the extraction of aluminium by Hall-Heroult process purified AI(2)O...

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