In which of the following metallurgical processes is no external reducing agent required?

  • A
    Mercury from cinnabar
  • B
    Zinc from zinc blende
  • C
    Iron from haematite
  • D
    Aluminium from bauxite

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Similar Questions

The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite $(Na_3AlF_6)$ is

In the extraction of $Zn$,which gas is burnt in the jackets surrounding the retorts?

$I$. $FeCr_2O_4 + NaOH + \text{air} \rightarrow Na_2CrO_4 + Fe_2O_3$
$II$. $Na_2CrO_4 + H_2SO_4 \rightarrow Na_2Cr_2O_7$
$Na_2CrO_4$ and $Fe_2O_3$ are separated by:

Heating a mixture of $Cu_2O$ and $Cu_2S$ will give:

The role of fluorspar $(CaF_2)$, which is added in small quantities in the electrolytic reduction of alumina $(Al_2O_3)$ dissolved in fused cryolite $(Na_3AlF_6)$, is:

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