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Question:

An example of a disproportionation reaction is:

2KMnO4→K2MnO4+MnO2+O2

2MnO4−+10I−+16H+→2Mn2++5I2+8H2O

2CuBr→CuBr2+Cu

2NaBr+Cl2→2NaCl+Br2

Solution:

Correct option is C. 2CuBr→CuBr2+Cu