The reaction that does not define calcination is:

  • A
    $Fe_2O_3 \cdot XH_2O \xrightarrow{\Delta} Fe_2O_3 + XH_2O$
  • B
    $2Cu_2S + 3O_2 \longrightarrow 2Cu_2O + 2SO_2$
  • C
    $ZnCO_3 \xrightarrow{\Delta} ZnO + CO_2$
  • D
    $CaCO_3 \cdot MgCO_3 \xrightarrow{\Delta} CaO + MgO + 2CO_2$

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