Calcination is the process in which

  • A
    ore is heated above its melting point to expel $H_2O$ or $CO_2$ or $SO_2$
  • B
    ore is heated below its melting point to expel volatile impurities
  • C
    ore is heated above its melting point to remove $S, As$ and $Sb$ as $SO_2, As_2O_3$ and $Sb_2O_3$ respectively
  • D
    ore is heated below its melting point to expel $H_2O$ or $CO_2$

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