JEE Main2013ChemistryGeneral Principles and Processes of Isolation of MetalsActual

Calcination is the process in which:

Options

Aore is heated above its melting point to expel H ₂ O or CO ₂ or SO ₂
Bore is heated below its melting point to expel volatile impurities
Core is heated above its melting point to remove S , As and Sb as SO ₂, As ₂ O ₃ and Sb ₂ O ₃ respectively
Dore is heated below its melting point to expel H ₂ O or CO ₂

Correct answer

D. ore is heated below its melting point to expel H ₂ O or CO ₂

Step-by-step solution

Calcination is a process of heating a substance to a high temperature but below the melting or fusion point, causing loss of moisture, reduction or oxidation and dissociation into simpler substances.

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