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(B) The extraction of metals from their ores involves several steps such as concentration,roasting/calcination,reduction,and refining.$A$. $ZnCO_3 \ri

Vedclass · Accepted Answer

$CuFeS_2$ $\rightarrow$ $Cu$ (Pure)

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(B) The extraction of metals from their ores involves several steps such as concentration,roasting/calcination,reduction,and refining.$A$. $ZnCO_3 \rightarrow Zn$ involves calcination followed by reduction ($2$ steps).$B$. $CuFeS_2 \rightarrow Cu$ involves concentration,roasting,smelting,bessemerization,and electrolytic refining (more than $2$ steps).$C$. $PbS \rightarrow Pb$ involves roasting followed by reduction ($2$ steps).Since $CuFeS_2$ extraction involves multiple complex steps including concentration,roasting,smelting,and refining,it clearly involves more than two metallurgical processes.

List $I$	List $II$
$A$. Reverberatory furnace	$I$. Pig Iron
$B$. Electrolytic cell	$II$. Aluminum
$C$. Blast furnace	$III$. Silicon
$D$. Zone Refining furnace	$IV$. Copper

List-$I$	List-$II$
$(P) \ PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$	$(1) \ \text{Smelting}$
$(Q) \ PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$	$(2) \ \text{Self reduction}$
$(R) \ PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$	$(3) \ \text{Calcination}$
$(S) \ PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$	$(4) \ \text{Roasting}$

Which of the following changes involve more than two metallurgical processes?

Similar Questions

Match List $I$ with List $II$.

List $I$ List $II$

$A$. Reverberatory furnace $I$. Pig Iron

$B$. Electrolytic cell $II$. Aluminum

$C$. Blast furnace $III$. Silicon

$D$. Zone Refining furnace $IV$. Copper

Which of the following is not a basic flux?

Identify the products of the reaction: $4FeCr_2O_4 + 8Na_2CO_3 + 7O_2 \rightarrow ?$

Bronze is a mixture of . . . . . . metals.

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