Question:
The chemical nature of Silica bricks is
The chemical nature of Silica bricks is
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Silica bricks contain high \(SiO_2\), and \(SiO_2\) is an acidic oxide. Therefore, silica bricks are acidic refractories.
Updated On: May 7, 2026
- Neutral
- Basic
- Acidic
- Super
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The Correct Option is C
Solution and Explanation
Silica bricks are refractory bricks made mainly from silica.
The principal component of silica bricks is:
\[
SiO_2.
\]
Silica is an acidic oxide.
Therefore, refractories containing a high percentage of silica are classified as acidic refractories.
Silica bricks are used in places where the slag or furnace atmosphere is acidic in nature.
They should not be used where highly basic slags are present because acidic refractories react with basic slags.
Now, among the given options, silica bricks are not neutral and not basic.
They are also not classified by the word “super” in chemical nature.
Since silica is acidic in nature, silica bricks are:
\[
\text{Acidic}.
\]
Hence, the correct answer is:
\[
\text{Acidic}.
\]
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