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Three of the following lower the surface energy of a fabric. Which is the odd one out?

  • A.a wax based repellent finish
  • B.a hydrophilic soil release finish
  • C.a fluorochemical repellent finish
  • D.a silicone repellent finish

Answer: B

A soil release finish deliberately raises the surface energy so that water can carry soil away in the wash. The other three all lower it to make the surface repellent. Soil release and repellency pull in opposite directions.

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