What is the purpose of annealing process?

To increase the hardness

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To decrease machinability

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To remove internal stress

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For surface hardening

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Solution

The correct option is C To remove internal stress
Annealing involves heating the steel to a suitable temperature, holding it at that temperature for some time and then cooling it slowly.

There are different methods of cooling.
The main purpose of Annealing is to reduce the hardness of a material.

Besides this, it is also used

To relieve the internal stress of a material

To restore ductility to perform the further operation on the material

To increase the machinability of the material

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