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Polytetrafluoroethylene serves as a solid lubricant because of its

  • A.layer lattice structure
  • B.ability to adsorb moisture from the air
  • C.very low coefficient of friction
  • D.high thermal conductivity

Answer: C

Nothing adheres to the fluorine sheath and the chains slide past one another readily, giving one of the lowest friction coefficients of any solid. Its poor thermal conductivity and low load capacity limit where it can be used unsupported.

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