HomeEngineeringAge hardening is connected with 991. Age hardening is connected withBy Admin / September 6, 2025 A. Babbit metal B. Gun metal C. Stainless steel D. Duralumin ✅ The correct answer is option D.
1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm². Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin
2. Transformer cores are normally made from Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin