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MHT CET2019Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Limestone is used as a flux in the extraction of

Options

  1. AIron
  2. BAluminium
  3. CZinc
  4. DCopper

Correct answer

A. Iron

Step-by-step solution

Limestone is used as a flux in the extraction of iron because it decomposes in hot furnace to form calcium oxide and carbon dioxide. The formed calcium oxide actually acts as flux and combined with silica to form fusible calcium silicate slag.

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