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Oxidative desizing with a persulphate or peroxide is chosen when

  • A.the fabric is to be left undyed
  • B.a mixed or unknown size must be removed
  • C.the size is known to be entirely pure starch
  • D.no alkali at all is available

Answer: B

The oxidant attacks size of any kind, which suits a commission finisher receiving cloth of unknown history. The risk is that it can attack the cellulose too if the conditions are not controlled. Commission finishers meet this situation often.

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