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Assertion (A): The dispersion number and the Peclet number carry the same information.
Reason (R): One is the reciprocal of the other.

  • A.A is true but R is false
  • B.A is false but R is true
  • C.Both A and R are true, and R is the correct explanation of A
  • D.Both A and R are true, but R is not the correct explanation of A

Answer: C

Both are true and the reason gives the relation, though care is needed because the Peclet number may be defined on the vessel length or on the particle diameter and the two differ by a large factor. Which definition is meant should always be stated.

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