When a small amount of $KMnO_4$ is added to concentrated $H_2SO_4$,a green oily compound is obtained which is highly explosive in nature. The compound is:

  • A
    $MnSO_4$
  • B
    $Mn_2O_7$
  • C
    $MnO_2$
  • D
    $Mn_2O_3$

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