Which one of the following statements is inco | vedclass

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Question

(B) The correct answer is $B$. $A$. Tin $(Sn)$ is extracted from its ore cassiterite $(SnO_2)$ by reduction with carbon (smelting). This is correct. $

Vedclass · Accepted Answer

Aluminium is extracted by Hall’s process which involves carbon reduction.

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(B) The correct answer is $B$. $A$. Tin $(Sn)$ is extracted from its ore cassiterite $(SnO_2)$ by reduction with carbon (smelting). This is correct. $B$. Aluminium $(Al)$ is extracted by the Hall-$H$éroult process,which involves the electrolytic reduction of alumina $(Al_2O_3)$ dissolved in molten cryolite $(Na_3AlF_6)$. It does not involve carbon reduction of the oxide. Therefore,this statement is incorrect. $C$. Bessemerisation is a process primarily used for the extraction of copper from copper matte. It is not involved in the extraction of lead. This is correct. $D$. Silver $(Ag)$ is extracted by the Mac-Arthur Forrest cyanide process,where the ore is treated with a dilute solution of $NaCN$ or $KCN$. This is correct.

Which one of the following statements is incorrect?

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