On the flow of electricity,what happens to the concentration of the anode solution in a galvanic cell?

Which of the following hot aqueous solutions is used to dip carbon rods of $H_2 - O_2$ fuel cell?

When a copper wire is placed in a solution of $AgNO_3$,the solution acquires a blue colour. This is due to the formation of

For the electrochemical cell $M \mid M^{2+} \parallel X \mid X^{2-}$, if $E^{\circ}_{(M^{2+} / M)} = 0.46 \ V$ and $E^{\circ}_{(X / X^{2-})} = 0.34 \ V$, which of the following is correct?

When does an electrochemical cell behave as an electrolytic cell?

Which of the following are intensive properties?
$(i)$ Molar conductivity
$(ii)$ Electromotive force $(EMF)$
$(iii)$ Resistance
$(iv)$ Heat capacity