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Ceramic raw materials are most usefully divided at the first level into

  • A.plastic and non-plastic materials
  • B.expensive and inexpensive materials
  • C.imported and locally sourced materials
  • D.white and coloured materials

Answer: A

Correct answer: plastic and non-plastic materials

The division is functional rather than descriptive: plastic materials, the clays, give the body the workability it needs to be formed, and non-plastic materials - fluxes and fillers - control what happens to it in the kiln. Every body is a compromise between the two, because plasticity is also what causes shrinkage.

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