1.

For how long is the heated steel held in full annealing process?(a) 1 minute(b) 3 minutes(c) 6 minutes(d) 9 minutes

Answer» Right answer is (b) 3 minutes

To explain: The heated steel is held at the critical temperature for about 3 to 4 minutes. By doing this, the steel gets enough time to make the internal changes desired.


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