Match the batteries given in Column-I with the electrolytes given in Column-II.
\[
\begin{array}{llcl}
(a) & \text{Lead storage battery} & (r) & 38\% \text{ solution of } H_2SO_4 \\[4pt]
(b) & \text{Leclanché cell} & (s) & \text{Moist paste of } NH_4Cl \text{ and } ZnCl_2 \\[4pt]
(c) & \text{Mercury cell} & (p) & \text{Moist KOH} \\[4pt]
(d) & \text{Nickel-Cadmium cell} & (q) & \text{KOH and ZnO paste}
\end{array}
\]