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  4. Limestone is used as a flux in the extraction of

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Q. Limestone is used as a flux in the extraction of

MHT CETMHT CET 2019General Principles and Processes of Isolation of Elements

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