The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.

Explanation

To solve the question regarding the preparation of the purest form of iron from cast iron in a reverberatory furnace, we will follow these steps:

### Step 1: Identify the Iron Ore Used
The iron ore used to line the reverberatory furnace is **hematite**, which has the chemical formula **Fe₂O₃**.

### Step 2: Understand the Role of Hematite
Hematite serves a crucial role in the process. It provides oxygen that reacts with the impurities present in cast iron, such as carbon, silicon, and sulfur.

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