Question

explain the following metals are obtaine from their Commpoenas by reduction process? ​

Answer 1

 1. metals low in reactivity series are obtained by the method of Heating Alone

 2. metals in the middle of the reactivity series are obtained by either

    Roasting - sulphides are converted to oxides when heated in presence of oxygen

    or        

    Calcination - carbonates are converted to oxides when heated in absence of

    oxygen

3. Electrolytic refining

Answer 2

Metals that are Low in reactivity are extracted by heating alone, that is, by process of Roasting. For instance, Cinnabar is ore of mercury. When it is heated in air, it is converted into Mercuric Oxide. Then is mercuric oxide is then reduced to mercury on further heating.