Wrought iron is the purest form of iron. Write a reation used for the preparation of wrought iron from cast iron. How can the impurities of sulphur, silicon and phosphorus be removed from cast iron?

Explanation

### Step-by-Step Solution

**Step 1: Understanding the Preparation of Wrought Iron from Cast Iron**
Wrought iron is the purest form of iron, and it is prepared from cast iron through a process that involves the oxidation of impurities present in cast iron.

**Step 2: The Reaction for Preparation**
The reaction used for the preparation of wrought iron from cast iron can be represented as follows:

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