Main source of lead is `PbS`. It is convered to `Pb` by:

Self- reduction process is:

Main source of lead is galena (PbS) . It is converted to Pb by : Self - reduction process is :

Main source of lead is galena (PbS) . It is converted to Pb by : Self - reduction process is :

Main source of lead is galena (PbS) . It is converted to Pb by : Self - reduction process is :

Main source of lead is galena (PbS) . It is converted to Pb by : Self - reduction process is :

The matel obtained by self reduction process is:

Main source of lead is PbS . It is converted to Pb by (I) PbS underset(Delta)overset("air")rarr PbO + SO_(2) (II) Self reduction process is

The metal obtained by self reduction process is

What is meant by self-reduction process?