Cupellation process is used in the metallurgy of

The method used for refining of iron is called

The most convenient method for the extraction of silver from silver glance is

Carbon cannot reduce $F{e}_2{O}_{3}Fe\_2O\_3$ to Fe at a temperature below 983 K because

Copper metal is refined by

Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?

The process of extracting metals by electrolysis of their oxides; hydroxides or chlorides in the fused state is called

According to Ellingham's diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

The reduction of zinc oxide with coke occurs at temperature.

$\mathrm{\Delta }{G}^{\circ }\backslash Delta\; G^\backslash circ$ vs T plot in the Ellingham’s diagram slopes downward for the reaction