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Q13 answe should be b. Cobalt 60
Q22 Can answer be C ?
I will check
22 Answer D is correct explanation -Weld decay occur when heating material too long near 700 deg celcius. Quenching is carrying out normally this temparature range so quenching cannot cure weld decay
![[English] CSWIP 3.1: Chapter 4 (Destructive Testing) Question & Answers](http://i.ytimg.com/vi/2l0JXDkyHVw/mqdefault.jpg)
Q13 answe should be b. Cobalt 60
Q22 Can answer be C ?
I will check
22 Answer D is correct
explanation -Weld decay occur when heating material too long near 700 deg celcius. Quenching is carrying out normally this temparature range so quenching cannot cure weld decay