Chemical Engineering Basics

Pick out the correct statement.

  • A. Hot worked materials are subjected to annealing to remove internal stresses
  • B. Annealing of steel hardens it slightly
  • C. Normalising of a material induces stresses
  • D. Tempering of a material improves ductility & toughness but reducess hardness & brittlenes
Answer: Option D.
Explanation: 

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