Question

Among the following metals how many metals are extracted by self-reduction method from their respective ores. (Given total number) `Hg,Zn,Cu,Al,Mg,Pb,Fe,Sn`

Answer 1

Correct Answer - C
`2HgS+3O_(2) to 2HgO+2SO_(2),2HgO+HgS to 3Hg+SO_(2)`
`Cu_(2)S+3O_(2)to 3CuO+2SO_(2),2CuO+Cu_(2)Sto 6Cu+SO_(2)`
`2PbS +3SO_(2) to 2PbO+2SO_(2),`
`2PbP+PbS to 3Pb+SO_(3)`