List of top Chemistry Questions on Electrochemistry asked in KEAM

Aryl halides react with Na in dry ether gives diphenyls. Name of the reaction is:
The resistance of a conductivity cell filled with 0.02 M KCl solution is 520 ohm at 298 K. The conductivity of the solution at 298 K is (Cell constant = 130 cm\(^{-1}\)):
The limiting molar conductances of NaCl, HCl and CH\(_3\)COONa at 300 K are 126.4, 425.9 and 91.0 S cm\(^2\) mol\(^-1\) respectively. The limiting molar conductance of acetic acid at 300 K is:
The resistance of the cell containing the aqueous solution of NaCl at 20°C is 60 ohm. If the specific conductivity of this solution at 20°C is 0.04 ohm-1.cm-1,what is the cell constant in cm-1? 
The standard electrode potentials of some electrodes are given below:
Fe3+/Fe2+ 0.77V;   Br2/Br- 1.09V;    I2/I- 0.54V;    Zn2+/Zn(s) -0.76V;
Ag+/Ag(s) 0.80V;    Fe2+/Fe(s) -0.44V;    Cu2+/Cu(s) 0.34V
Predict the reaction that is not feasible:
The electrolyte used in Leclanche cell is
One Faraday of electricity is passed through molten $Al_2O_3$ aqueous solution of $CuSO_4$ and molten $NaCl$ taken in three different electrolytic cells connected in series. The mole ratio of $Al,Cu$ and $Na$ deposited at the respective cathode is
Which one of the following has the highest molar conductivity?
The change in potential of the half-cell $Cu^{2+}|Cu$, when aqueous $Cu^{2+}$ solution is diluted $100$ times at $298 \,K$ ? $\left( \frac{2.303 RT}{F} = 0.06 \right)$