Before introducing `FeO` in blast furance, it is converted to `Fe_(2)O_(3)` by roasting so that

Options

A. It may not be removed as slag with silica
B. Oresence of it may increase the melting point of charge
C. It may not evaporate in the furnace
D. None of the above

Explanation

To solve the question regarding the conversion of `FeO` to `Fe2O3` before introducing it into the blast furnace, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Context**: The question asks why `FeO` is converted to `Fe2O3` before being introduced into the blast furnace. The blast furnace is used for the extraction of iron from its ores.

2. **Roasting Process**: The conversion of `FeO` to `Fe2O3` is done through a process called roasting. Roasting involves heating the ore in the presence of oxygen, which helps in oxidizing `FeO` to `Fe2O3`.

3. **Chemical Reaction**: The roasting process can be represented by the following chemical reaction:
\[ 4FeO + O_2 \rightarrow 2Fe_2O_3 \]
This reaction shows that `FeO` reacts with oxygen to form `Fe2O3`.

4. **Reason for Conversion**: The primary reason for converting `FeO` to `Fe2O3` is to prevent unwanted reactions in the blast furnace. If `FeO` were introduced directly, it could react with silica (`SiO2`) present in the furnace to form iron silicate (`FeSiO3`), which is not desirable.

5. **Formation of Slag**: The formation of `FeSiO3` would lead to the production of slag that is difficult to remove, thus complicating the extraction process of iron. By converting `FeO` to `Fe2O3`, this reaction is avoided, ensuring a more efficient extraction process.

6. **Conclusion**: Therefore, the conversion of `FeO` to `Fe2O3` before introducing it into the blast furnace is essential to prevent the formation of iron silicate and to ensure a smoother extraction of iron.