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Consider the following statements about reactor choice for fluid solid reactions.
1. A moving bed gives something close to plug flow of the solids.
2. A fluidised bed gives well mixed solids and uniform temperature.
3. A fluidised bed gives the more complete conversion of the two.

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

Answer: C

The first two are correct. The third is inverted, since well mixed solids means some particles leave almost at once, while a moving bed gives every particle the same time. Mixing and conversion pull against each other.

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