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NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

Consider the following statements : Roasting is carried out to : 1. Convert sulphide into oxide 2. Melt the ore 3. Remove moisture, water of hydration and expel organic matter 4. Remove sulphur and arsenic in the form of volatile oxides Out of these statements :

Options

  1. A1, 3 and 4 are correct
  2. B1, 2 and 3 are correct
  3. C2, 3 and 4 are correct
  4. D1, 2 and 4 are correct

Correct answer

A. 1, 3 and 4 are correct

Step-by-step solution

Roasting is heating in presence of air below melting point to convert sulphide ores into oxides. Impurities like S, As, P are removed as volatile oxides.

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