Easy
The term $Smelting$ is used for a process in which ......
- AThe ore is heated in the absence of air.
- BThe ore is kept cold.
- CThe ore is heated in the presence of air.
- DThe ore is melted.
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Similar Questions
$A$ metal has a high concentration in the Earth's crust and its oxides cannot be reduced by carbon. The most suitable method for the extraction of such metal is:
Easy
View SolutionThe cyanide process of gold extraction involves leaching out gold from its ore with $CN^{-}$ in the presence of $Q$ in water to form $R$. Subsequently,$R$ is treated with $T$ to obtain $Au$ and $Z$. Choose the correct option$(s)$.
$1$. $T$ is $Zn$
$2$. $R$ is $[Au(CN)_2]^-$
$3$. $Z$ is $[Zn(CN)_4]^{2-}$
$4$. $Q$ is $O_2$
$1$. $T$ is $Zn$
$2$. $R$ is $[Au(CN)_2]^-$
$3$. $Z$ is $[Zn(CN)_4]^{2-}$
$4$. $Q$ is $O_2$
In the electrolytic extraction of $Al$,molten cryolite $(Na_3AlF_6)$ is used because it .......
Medium
View SolutionHow is zinc produced from its ore?
Medium
View SolutionThe Bessemer converter is used in the manufacture of:
Easy
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