Question:

Which of the following is not a Triaxial material in whiteware?

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The triaxial whiteware composition consists mainly of clay, feldspar, and quartz.
  • Clay
  • Feldspar
  • Quartz
  • Rutile
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The Correct Option is D

Solution and Explanation

Concept: Whiteware bodies are commonly prepared using three main raw materials. These are called triaxial materials.

Step 1:
The three main triaxial materials used in whiteware are: \[ \text{Clay},\quad \text{Feldspar},\quad \text{Quartz} \]

Step 2:
Clay provides plasticity to the ceramic body and helps in shaping.

Step 3:
Feldspar acts as a flux. It lowers the vitrification temperature and helps in forming a glassy phase during firing.

Step 4:
Quartz acts as a filler and improves dimensional stability.

Step 5:
Rutile is mainly titanium dioxide mineral: \[ TiO_2 \] It is not one of the three basic triaxial materials of whiteware. Therefore, the material which is not a triaxial material in whiteware is: \[ \boxed{\text{Rutile}} \]
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