Select the correct statement:

  • A
    Roasting involves heating the ore in the absence of air.
  • B
    Calcination involves heating the ore above its melting point.
  • C
    Smelting involves heating the ore with a suitable reducing agent and flux below its melting point.
  • D
    Calcination of calcium carbonate is endothermic.

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Which statement is correct for roasting?

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