|
Which is not a step of metallurgy? |
|||
|
(a) |
Reduction |
(b) |
Roasting |
|
(c) |
Corrosion |
(d) |
Concentration of ore |
|
Which is not a step of metallurgy? |
|||
|
(a) |
Reduction |
(b) |
Roasting |
|
(c) |
Corrosion |
(d) |
Concentration of ore |