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Gas singeing passes the fabric

  • A.through a bath of hot alkali liquor
  • B.underneath an infrared lamp array
  • C.rapidly over a row of gas flames
  • D.over a heated copper plate surface

Answer: C

Correct answer: rapidly over a row of gas flames

The fabric passes across a gas flame at high speed, so the protruding fibre ends - which have a large surface and little mass - burn away while the body of the cloth is barely heated. The result is a smooth surface that prints cleanly and dyes evenly, without the frosty appearance loose fibre ends give.

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