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The firing range of a body is

  • A.the single temperature at which it must be fired exactly
  • B.the time taken for it to reach the peak temperature
  • C.the range of colours to which it can be fired
  • D.the temperature interval over which it is acceptable

Answer: D

A wide range means variations across the kiln can be tolerated, while a narrow one means part of the load is underfired and part deformed. Widening it is one of the main objects of body formulation. A wide range forgives the unavoidable variation across a kiln load.

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