when low carbon steel is heated up to lower critical temperature Options: A . &nbsp There is no change in grain size B . &nbsp The average grain size is a minimum C . &nbsp The grain size increases very rapidly D . &nbsp The grain size first increases and then decreases very rapidly

when low carbon steel is heated up to lower critical temperature

Question

When low carbon steel is heated up to lower critical temperature

Options:

A . There is no change in grain size

B . The average grain size is a minimum

C . The grain size increases very rapidly

D . The grain size first increases and then decreases very rapidly

Answer: Option A
Explanation :

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