Question:
Which of the following acts as Flux?
Which of the following acts as Flux?
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Feldspar acts as a flux in ceramic bodies because it lowers the firing temperature and helps vitrification.
Updated On: May 7, 2026
- Clay
- Quartz
- Feldspar
- Zircon
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The Correct Option is C
Solution and Explanation
A flux is a material that lowers the melting temperature of a ceramic body.
In white ware ceramics, feldspar is the most common flux.
Feldspar contains alkali oxides such as:
\[
K_2O
\]
and
\[
Na_2O.
\]
These alkali oxides help to form a liquid phase during firing.
This liquid phase promotes vitrification and bonding between particles.
Clay mainly provides plasticity.
Quartz mainly acts as a filler.
Zircon is often used as an opacifier or refractory additive.
Therefore, the material which acts as a flux is:
\[
\text{Feldspar}.
\]
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