During the detection of phosphorus in an organic compound,a yellow precipitate is formed due to the formation of:

  • A
    $(NH_4)_3PO_4$
  • B
    $Mg_2P_2O_7$
  • C
    $(NH_4)_3PO_4 \cdot 12MoO_3$
  • D
    $(NH_4)_2MoO_4$

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The presence of halogen in an organic compound is detected by:

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