Which of the following statements is $NOT$ correct?

  • A
    Ammonia is used as a refrigerant.
  • B
    The mixture of $Ca(CN)_2$ and $C$ is called nitrolim.
  • C
    The mixture of $Ca(H_2PO_4)_2$ and $CaSO_4 \cdot 2H_2O$ is known as superphosphate of lime.
  • D
    Hydrolysis of $NCl_3$ gives $NH_3$ and $HOCl$.

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