(1) Steels are heated to 500 to \[700{}^\circ C\] |
(2) Cooling is done slowly and steadily |
(3) Internal stresses are relieved |
(4) Ductility of steel is reduced. |
A) 2, 3 and 4
B) 1, 3and 4
C) 1, 2 and 4
D) 1, 2 and 3.
Correct Answer: D
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