Medium
During the extraction of sodium metal by electrolysis,a mixture of $40\%$ molten $NaCl$ and $60\%$ $CaCl_2$ is used because .......
- Ait helps in the conduction of electricity
- Bthe melting point of this mixture is lower than the melting point of $NaCl$
- C$Ca^{2+}$ ions from $CaCl_2$ displace $Na^+$ ions from $NaCl$
- D$Ca^{2+}$ ions can reduce $NaCl$ to $Na$
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Similar Questions
Among the following,the main reactions occurring in the blast furnace during the extraction of iron from haematite are:
$i$. $Fe_2O_3 + 3CO \rightarrow 2Fe + 3CO_2$
$ii$. $FeO + SiO_2 \rightarrow FeSiO_3$
$iii$. $Fe_2O_3 + 3C \rightarrow 2Fe + 3CO$
$iv$. $CaO + SiO_2 \rightarrow CaSiO_3$
$i$. $Fe_2O_3 + 3CO \rightarrow 2Fe + 3CO_2$
$ii$. $FeO + SiO_2 \rightarrow FeSiO_3$
$iii$. $Fe_2O_3 + 3C \rightarrow 2Fe + 3CO$
$iv$. $CaO + SiO_2 \rightarrow CaSiO_3$
MediumKCET 2019
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