Medium
According to the Ellingham diagram,at lower temperatures,the oxidation of $C$ to $CO$ is useful for the reduction of which of the following?
- A$Al_2O_3$
- B$Cu_2O$
- C$MgO$
- D$ZnO$
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In the metallurgy of $Zn$,flux is not used because
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View SolutionWhich statement is correct regarding the slag formed during the extraction of copper or iron?
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View SolutionMatch column $(I)$ (process) with column $(II)$ (electrolyte)
$(I)$ (process) $(II)$ (electrolyte) $(i)$. Downs cell $(W)$. fused $MgCl_2$ $(ii)$. Dow sea water process $(X)$. fused $(Al_2O_3 + Na_3AlF_6)$ $(iii)$. Hall-Heroult $(Y)$. fused $KHF_2$ $(iv)$. Moissan $(Z)$. fused $(40\% NaCl + 60\% CaCl_2)$
Choose the correct alternate :
| $(I)$ (process) | $(II)$ (electrolyte) |
| $(i)$. Downs cell | $(W)$. fused $MgCl_2$ |
| $(ii)$. Dow sea water process | $(X)$. fused $(Al_2O_3 + Na_3AlF_6)$ |
| $(iii)$. Hall-Heroult | $(Y)$. fused $KHF_2$ |
| $(iv)$. Moissan | $(Z)$. fused $(40\% NaCl + 60\% CaCl_2)$ |
Choose the correct alternate :
During the extraction of copper from copper pyrite,the flux used for the removal of ferrous oxide is:
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View SolutionMatte contains mainly
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