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Rot steeping as a desizing method relies on

  • A.fermentation by natural micro-organisms
  • B.the action of a purified enzyme preparation
  • C.a strong oxidising agent
  • D.a concentrated alkali

Answer: A

It is the oldest method, cheap but slow and uncontrolled, and it can damage the fabric if it is allowed to run too long. Enzymatic desizing is the controlled version of the same chemistry. Time and temperature are hard to hold steady.

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