Identify the correct pairs in which the chemical substance given is correctly matched with its use.
Chemical substanceUse
$A. Cl_2$Preparation of phosgene
$B. I_2O_5$Estimation of $CO$
$C. O_3$Disinfectant

  • A
    $A, B, C$
  • B
    $A, B$ only
  • C
    $B, C$ only
  • D
    $A, C$ only

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