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State whether the following is true or false.
A particle reacting by the progressive conversion model keeps its original size.

  • A.True only at large scales
  • B.False only at small scales
  • C.True
  • D.False

Answer: C

The fluid penetrates throughout and the composition changes uniformly rather than a front moving inward. Only the shrinking core picture involves a receding boundary. Composition changes uniformly instead. The size stays constant throughout.

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