Which one of the following reactions does $NOT$ belong to "Lassaigne's test"?

  • A
    $Na + C + N \xrightarrow[\Delta]{ } NaCN$
  • B
    $2 Na + S \xrightarrow[\Delta]{ } Na_2S$
  • C
    $Na + X \xrightarrow[\Delta]{ } NaX$
  • D
    $2 CuO + C \xrightarrow[\Delta]{ } 2 Cu + CO_2$

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