Which of the following reactions are disproportionation reactions ? (I)Cu^(+)toCu^(2+)+Cu (II)3MnO_4^(-)+4H^(+)to2MnO_4^(-)+MnO_2+2H_2O (III) 2KMnO_4 to K_2MnO_4+MnO_2+O_2 (IV)2MnO_4^(-)+3Mn^(2+)+2H_2Oto5MnO_2+4H^(+)

Which of the following reactions are disproportionation reactions ? (

1.	Which of the following reactions are disproportionation reactions ? (I)Cu^(+)toCu^(2+)+Cu (II)3MnO_4^(-)+4H^(+)to2MnO_4^(-)+MnO_2+2H_2O (III) 2KMnO_4 to K_2MnO_4+MnO_2+O_2 (IV)2MnO_4^(-)+3Mn^(2+)+2H_2Oto5MnO_2+4H^(+)
Answer» (a), (C) and (d) (a) and (d) only (a) and (B) only (d) (a), (b) and (c). ANSWER :C