Caustic soda is produced in a mercury cell having anode and cathode
made respectively of moving mercury and
(A) Moving mercury and graphite
(B) Graphite and moving mercury
(C) Moving mercury and carbon
(D) Moving mercury and crimped steel wire
made respectively of moving mercury and
(A) Moving mercury and graphite
(B) Graphite and moving mercury
(C) Moving mercury and carbon
(D) Moving mercury and crimped steel wire