Which of the cases is suitable for concentration by hand picking?

Copper is extracted from low grade copper ores.

Electrochemical processes in metallurgy are spontaneous.

Which of the following is an electrolyte used during the electrolytic refining of copper?

What does the Ellingham diagram consist of?

Where are the magnetic particles collected in concentration by electromagnetic separation?

What is the net reaction in Hall-Heroult process?

Zone refining is also called fractional crystallization.