Oxidising impurities of cast iron is a reverberatory furnace lined with haematite, we get
Pig iron
Cast iron
Wrought iron
Steel
The technique very useful in the refining of low melting metal like tin is
Distillation
Electrolytic refining
Liquation
Smelting
Melting pig iron with scrap iron and coke is called
Spongy iron
Most abundant metal is
O
C
Fe
Al
Cinnabar is an ore of
Hg
Cu
Pb
Zn
The anodes are of impure metal and pure metal are taken as cathode. The technique used here is
The ore is heated in regular supply of air in a furnace at a temperature below the melting point of metal is called
Roasting
Calcination
Refining
In the metallurgy of silver and gold, the leaching agents are
NaCN and O2
NaCN and CO2
KCN and O2
'A' or 'C'
In the reduction of molten metal salt, _____ is done .
Pyrolysis
Electrolysis
The reduction of Iron oxides takes place in different temperature ranges. It is carried out in
Open Hearth process
Blast furnace
Electrolytic cell
Bessemer convertor
