Question : Slow and uniform cooling of hot iron in its metallurgy is known as:
Option 1: quenching
Option 2: tempering
Option 3: chilling
Option 4: annealing
Correct Answer: annealing
Solution : The correct option is annealing .
Annealing is the term for the gradual and homogeneous cooling of hot iron in its metallurgy. A metal, such as iron, is heated to a certain temperature and then slowly cooled as part of the annealing process to improve its qualities, lessen internal tensions, and increase its overall structure and characteristics.
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