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

Explain the symbolic representation of a galvanic cell (electrochemical cell) with a suitable example.

Saturated solution of $KNO_3$ is used to make a salt bridge because

Which option is incorrect for the working cell? $Pt \mid Cl_{2(g, 1 \ bar)} \mid Cl_{(C_1)}^{-} \parallel Cl_{(C_2)}^{-} \mid Cl_{2(g, 1 \ bar)} \mid Pt$

Given that
$E^o_{Ni^{2+} | Ni} = -0.25 \ V$
$E^o_{Cu^{2+} | Cu} = 0.34 \ V$
$E^o_{Ag^{+} | Ag} = 0.80 \ V$
$E^o_{Zn^{2+} | Zn} = -0.76 \ V$
Which of the following reactions under standard condition will not take place in the specified direction?

What is the reaction when a $Zn$ rod is kept in a copper nitrate solution?