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Bypassing in a reactor shows up on the E curve as

  • A.a perfectly symmetrical curve shape
  • B.an early spike of tracer
  • C.a long tail at large times only
  • D.a delay before any tracer appears at all

Answer: B

Correct answer: an early spike of tracer

Bypassing means part of the feed takes a short route and leaves almost at once, so tracer appears far earlier than \( \tau \) and in a sharp peak, followed by the ordinary response of the remainder. A long tail indicates dead volume slowly exchanging with the main flow, and a delay before any tracer appears indicates a plug flow section in the path.

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