Electrochemistry

A. From cathode to anode in outer circuit
B. From anode to cathode outside the cell
C. From cathode to anode inside the cell
D. both B & C

A. N
B. Cr
C. S
D. Mn

A. H2 is deposited at cathode
B. Colour of the solution becomes fade
C. Cu is deposited at anode
D. All are possible