S.No.	Column-I	S.No.	Column-II
A)	1 mole of ${\mathrm{MnO}}_4^{-}\text{to }{\mathrm{Mn}}^{2+}$	p)	193000 C
B)	1 mole of ${\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}\text{ to }{\mathrm{Cr}}^{3+}$	q)	289500 C
C)	1 mole of ${\mathrm{Sn}}^{4+}\text{ to }{\mathrm{Sn}}^{2+}$	r)	482500 C
D)	1 mole of ${\mathrm{Al}}^{3+}\text{ to }\mathrm{Al}$	s)	579000 C

$\text{ (A) }{\mathrm{MnO}}_4^{-}\to {\mathrm{Mn}}^{+2};7\to 2$
$\therefore \text{ charge }=5{\mathrm{e}}^{-}=5\times 96500\mathrm{c}=482500\mathrm{c}$
$\text{ (B) }{\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}\to {\mathrm{Cr}}^{+3};6\to +3$
$\therefore \text{ charge }=6{\mathrm{e}}^{-}=6\times 96500\mathrm{c}=579000\mathrm{c}$
$\text{ (C) }{\mathrm{Sn}}^{+4}\to {\mathrm{Sn}}^{+2}$
$\therefore \text{ charge }=2{\mathrm{e}}^{-}=2\times 96500\mathrm{c}=193000\mathrm{c}$
$\text{ (D) }{\mathrm{Al}}^{+3}\to \mathrm{Al};3\to 0$
$\therefore \text{ charge }=3{\mathrm{e}}^{-}=3\times 96500\mathrm{c}=289500\mathrm{c}$