Learn about new technologies!

What is the correct answer?


Electrometallurgical methods of metal extraction is normally used for those metals

A. Whose oxide/ore is not reduced by carbon

B. Which fall in the category of alkali & alkaline earth metals

C. Which stands higher in the electrochemical series of the metal

D. All (A), (B) & (C)

Please do not use chat terms. Example: avoid using "grt" instead of "great".