Cathode
Anode
Electrode
None of these
Mild steel
Aluminium
Invar
Titanium
L=P
L=4P
L=2P
L=(1/2)P
Calcium Di Sulfide
Molybdenum Di Sulfide
Potassium Di Sulfide
Sodium Di Sulfide
Lapping
Milling
Honing
Buffing