Match the following column I and column II :

List-I	List-II
A) Dry cell	P) Over cell reaction  $2H_{2\left(g\right)}+O_{2\left(g\right)}\to 2H_{2}O\left(l\right)$
B) Ni-Cd cell	Q) Does not involve any ion in solution and is used in hearing aids
C) Fuel cell	R) Rechargeable
D) Mercury cell	S)  Reaction at cathode $Zn\left(Hg\right)+2O{H}^{-}\to ZnO+H_{2}O+2e^{-}$
	T) Reaction at anode  Zn(s) $\to$Z  $n^{2+}+2e^{-}$