The cells A and B contain aqueous solutions of ferrous chloride and ferric chloride respectively. The mass of iron deposited by the same quantity of electricity in cells A and B is in the ratio.

What happens during the discharge of a lead storage battery?

Calculate the concentration of silver nitrate solution if molar conductivity and conductivity of silver nitrate at $25^\circ$C are respectively 120 ohm$^{-1}$ cm$^2$ mol$^{-1}$ and 0.0024 ohm$^{-1}$ cm$^{-1}$.

The $E^0_{\text{cell}}$ of $\text{Al}_{(s)} | \text{Al}^{3+}(1\text{M}) || \text{Pb}^{2+}(1\text{M}) | \text{Pb}_{(s)}$ cell is 1.5 V if $E^0_{\text{Pb}}$ is $-0.14$ V then $E^0_{\text{Al}}$ will be