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The bleaching agent most widely used for cotton today is

  • A.sodium dithionite
  • B.hydrogen peroxide
  • C.sodium hypochlorite
  • D.sodium chlorite

Answer: B

Correct answer: hydrogen peroxide

Peroxide is used for the great majority of cotton bleaching. It gives a good stable white, works in the same alkaline conditions as scouring so the two can be combined, and leaves nothing objectionable behind - which is the point the next item develops.

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