Question:
\(\ldots\ldots\ldots\ldots\ldots\) refractories burst in presence of Iron oxide under oxidizing condition.
\(\ldots\ldots\ldots\ldots\ldots\) refractories burst in presence of Iron oxide under oxidizing condition.
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Chromite refractories may show bursting problems in the presence of iron oxide under oxidizing conditions.
Updated On: May 7, 2026
- Dolomite
- Silica
- Fire clay
- Chromite
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The Correct Option is D
Solution and Explanation
Chromite refractories are made from chromite mineral.
Chromite contains oxides of chromium and iron.
Under oxidizing conditions, iron oxide present in the system can react and cause structural changes.
These reactions may create internal stresses in the refractory body.
When internal stress becomes high, the refractory may burst or fail.
The question specifically asks which refractory bursts in the presence of iron oxide under oxidizing condition.
According to refractory behavior, this defect is associated with chromite refractories.
Dolomite, silica, and fire clay refractories have different chemical behavior.
Therefore, the correct answer is:
\[
\text{Chromite}.
\]
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