Which of the following is not correctly match | vedclass

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(D) In the extraction of copper from copper glance $(Cu_2S)$,the process involves roasting the ore in air to convert part of $Cu_2S$ into $Cu_2O$. The

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$Cu_2S 	o Cu$: Roasting followed by carbon reduction

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(D) In the extraction of copper from copper glance $(Cu_2S)$,the process involves roasting the ore in air to convert part of $Cu_2S$ into $Cu_2O$. Then,the remaining $Cu_2S$ reacts with $Cu_2O$ in a process known as self-reduction (or auto-reduction) to produce metallic copper $(Cu_2S + 2Cu_2O 	o 6Cu + SO_2)$. Carbon reduction is not used for $Cu_2S$ because copper has a lower affinity for oxygen than carbon at high temperatures,and self-reduction is more efficient. Therefore,option $D$ is incorrectly matched.

Which of the following is not correctly matched?

Similar Questions

Extraction of copper from copper pyrite $CuFeS_2$ involves:
$A$. Crushing followed by concentration of the ore by froth-flotation
$B$. Removal of iron as slag
$C$. Self-reduction step to produce 'blister copper' following evolution of $SO_2$
$D$. Refining of 'blister copper' by carbon reduction

The molar mass of the water-insoluble product formed from the fusion of chromite ore $(FeCr_2O_4)$ with $Na_2CO_3$ in the presence of $O_2$ is $..........$ $g \ mol^{-1}$.

Which alloy contains $Cu$,$Sn$ and $Zn$?

Read the following statements :
$(I)$ $Al$ has greater affinity than that of $Cr$ for oxygen
$(II)$ $Al$ can be used for reduction of $Fe_2O_3$
$(III)$ Carbon is used for reduction of $PbO$
$(IV)$ $SnO_2$ can be reduced by carbon
Choose the correct set of statement$(s)$:

One of the constituents of German silver is:

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