Complete the following reactions: `(a) MnO_2+KOH +O_2 rarr`
(b)`I^-+MnO_4^-+H^+ rarr`
( c) `Cr_2O_7^(2-)+Sn^(2+)+H^+rarr`

Explanation

See Q.23 (ii) (or) (ii) Paper - 2016 ,Delhi Board ,set-I [page 108]
( b)`2MnO_4^-+10I^-+16H^-rarr 2Mn^(2+)+5l_2+8H_2O`
( c) See Q.7 (or) (ii) Paper - 2016 Delhi Board ,Set-I[page 338].