Which of the following process is not involved in the extraction of Fe?

Gravity separation

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Leaching

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Roasting

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Carbon reduction

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Solution

The correct option is B Leaching
Leaching: It involves treatment of ore with a suitable reagent so as to make it soluble while impurities remain insoluble.The ore is recovered from the solution by a suitable chemical method.
Leaching is not involved in extraction as leaching is required for hydrometallurgy or to purify or concentrate ore for electrolytic reduction.
All other processes are involved in Fe extraction.

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