question_answer

           Which of the following statements are true of annealing of steels?                      

(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.

Select the correct answer using the codes given below:                          

A) 2, 3 and 4                     

B) 1, 3and 4    

C) 1, 2 and 4                     

D) 1, 2 and 3.