HomeEngineeringHardening of steel is not possible unless it is heated __________ critical point. 1800. Hardening of steel is not possible unless it is heated __________ critical point.By Admin / September 7, 2025 Above the highest Above the lowest Between the first & second Between the second & third ✅ The correct answer is option B.
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