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Engineering Materials

Q1: In process annealing, the hypo-eutectoid steel is

A heated from 30° C to 50° C above the upper critical temperature and then cooled in still air

B heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

C heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace

D heated below or close to the lower critical temperature and then cooled slowly

ANS:D - heated below or close to the lower critical temperature and then cooled slowly

Explanation: No answer description is available. 



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