$H_2O_2$ is manufactured these days by

  • A
    electrolysis of $50\%$ $H_2SO_4$
  • B
    the action of $H_2SO_4$ on $BaO_2$
  • C
    the action of $H_2O_2$ on $BaO_2$
  • D
    auto-oxidation of $2$-ethylanthraquinol

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$H_2O_2$ is used as:

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