Multiple choice general knowledge science & technology

One of the following objectives is not achieved by the process of annealing

  1. to relieve internal stress

  2. to refine grain structure

  3. to increase the yield point

  4. to soften the metal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Annealing relieves internal stresses, refines grain structure, and softens metal by heating and slow cooling. However, annealing DECREASES the yield point (makes material more ductile) rather than increasing it. Processes like cold working or strain hardening increase yield point, but annealing does the opposite.

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