Question:
Tabular Alumina contains \(\ldots\ldots\ldots\ldots\ldots\) phase.
Tabular Alumina contains \(\ldots\ldots\ldots\ldots\ldots\) phase.
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Tabular alumina is a dense sintered form of alpha alumina \((\alpha-Al_2O_3)\).
Updated On: May 7, 2026
- \(\alpha\)
- \(\beta\)
- \(\gamma\)
- \(\delta\)
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The Correct Option is A
Solution and Explanation
Alumina exists in different crystalline phases.
Some common phases are:
\[
\alpha,\quad \gamma,\quad \delta,\quad \theta.
\]
Among these, alpha alumina is the most stable and most refractory form.
Tabular alumina is produced by sintering alumina at very high temperature.
During this process, alumina converts into dense alpha alumina crystals.
The structure becomes well-developed and plate-like or tabular.
Because of its high purity, high refractoriness, and good thermal stability, tabular alumina is used in high quality refractory products.
Therefore, tabular alumina contains:
\[
\alpha\text{-phase alumina}.
\]
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