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Consider the following statements about micromixing models.
1. Complete segregation treats the fluid as globules that do not mix.
2. Maximum mixedness mixes each element as early as possible.
3. The two give different conversions for a first order reaction.

  • A.All of them
  • B.1 and 2 only
  • C.3 only
  • D.1 only

Answer: B

The first two are correct and describe the two limits. The third is wrong for first order, where the linearity makes the two limits coincide exactly. Micromixing matters only for other orders. The gap between the limits is often small.

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