Which of the following reactions are disproportionation reactions? `(A)" " Cu^(+)rarrCu^(2+)+Cu` `(B)" "3 MnO_(4)^(2-)+4H^(+)rarr2MnO_(4)^(-)+MnO_(2)+2H_(2)O` `(C )" "2KMnO_(4)rarrK_(2)MnO_(4)+MnO_(2)+O_(2)` `(D)" "2MnO_(4)^(-)+3Mn^(2+)+2H_(2)O rarr5MnO_(2)+4H^(+)`A. I,IIB. I,II,IIIC. II,III,IVD. I,IV

Which of the following reactions are disproportionation reactions? `(A

1.	Which of the following reactions are disproportionation reactions? `(A)" " Cu^(+)rarrCu^(2+)+Cu` `(B)" "3 MnO_(4)^(2-)+4H^(+)rarr2MnO_(4)^(-)+MnO_(2)+2H_(2)O` `(C )" "2KMnO_(4)rarrK_(2)MnO_(4)+MnO_(2)+O_(2)` `(D)" "2MnO_(4)^(-)+3Mn^(2+)+2H_(2)O rarr5MnO_(2)+4H^(+)`A. I,IIB. I,II,IIIC. II,III,IVD. I,IV
Answer» Correct Answer - A In (I), `Cu^(+)` is oxidised as well as reduced. In (II), `MnO_4^(-)` ions are oxidised as well as reduced.

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