At high temperatures, nitrogen directly combines with
$Zn$
$Al$
$Fe$
$Cu$
$Al + \frac{1}{2}{N_2}\xrightarrow{\Delta }AlN$
Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the oxides and not subjecting the sulphide ores to carbon reduction directly ?
Aluminium is extracted from alumina $(Al_2O_3)$ by electrolysis of a molten mixture of
Which of the following mineral does not contain iron :
The process of the extraction of copper from copper pyrites involves:- $(I)$ Froth floatation $(II)$ Calcination $(III)$ Roasting $(IV)$ Self reduction $(V)$ Smelting $(VI)$ Liquation $(VII)$ Electrorefining
The element which could be extracted by electrolytic reduction of its oxide dissolved in a high temperature melt is:
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