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KCET2024ChemistryGeneral Principles and Processes of Isolation of Metals

Select the correct statement :

Options

  1. ARoasting involves heating the ore in the absence of air.
  2. BCalcination involves heating the ore above its melting point.
  3. CSmelting involves heating the ore with suitable reducing agent and flux below its melting point.
  4. DCalcination of calcium carbonate is endothermic.

Correct answer

D. Calcination of calcium carbonate is endothermic.

Step-by-step solution

Among the given statements, correct statement is given in option (4). While statement given in options (1), (2) and (3) are incorrect. Their correct form are as follows - Roasting involves heating the ore is the regular supply of air. - Calcination involves heating the ore below its melting point. - Smelting is the process by which a metal is obtained at temperature beyond the melting

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