Poling process is used for:

CHEMISTRY · Single correct · ICSE · Chemistry · Electrolysis · Electrolysis

Problem

Poling process is used for: (1) The removal of

\text{Cu}_2\text{O}

from Cu (2) The removal of

\text{Al}_2\text{O}_3

from Al (3) The removal of

\text{Fe}_2\text{O}_3

from Fe (4) All of these