Which of the following statements is not corr | vedclass

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(D) The correct answer is $D$. $Al$ is extracted by the electrolytic reduction of fused $Al_2O_3$ mixed with $Na_3AlF_6$ (cryolite) and $CaF_2$ (fluor

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Aqueous $Al_2(SO_4)_3$ is used for electrorefining of $Al$.

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(D) The correct answer is $D$. $Al$ is extracted by the electrolytic reduction of fused $Al_2O_3$ mixed with $Na_3AlF_6$ (cryolite) and $CaF_2$ (fluorspar) to lower the melting point and increase conductivity. Aqueous $Al_2(SO_4)_3$ cannot be used for the electrorefining of $Al$ because $Al$ is more reactive than $H_2$ and would react with water to produce $H_2$ gas instead of depositing $Al$ at the cathode. Option $A$ is correct as pine oil acts as a frother. Option $B$ is correct as poling is used to remove impurities like $Cu_2O$ from molten copper. Option $C$ is correct as dolomite is $CaCO_3 \cdot MgCO_3$.

List-$I$	List-$II$
$1. Ti$	$A. \text{Bauxite}$
$2. Si$	$B. \text{Cerussite}$
$3. Al$	$C. \text{Van-Arkel method}$
$4. Pb$	$D. \text{Zone refining}$

Which of the following statements is not correct?

Similar Questions

Match List-$I$ with List-$II$ and select the correct answer using the codes given below the list.
List-$I$ List-$II$
$1. Ti$ $A. \text{Bauxite}$
$2. Si$ $B. \text{Cerussite}$
$3. Al$ $C. \text{Van-Arkel method}$
$4. Pb$ $D. \text{Zone refining}$

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

Refractory materials are generally used in furnaces because

Among the following compounds,the number of those present in copper matte is $......$
$A.$ $CuCO_3$
$B.$ $Cu_2S$
$C.$ $Cu_2O$
$D.$ $FeO$

In the leaching of $Ag_2S$ with $NaCN$,a stream of air is also passed. It is because of

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