HomeEngineeringChalcopyrite is the main ore of 5367. Chalcopyrite is the main ore ofBy Admin / September 7, 2025 Copper Lead Tin Iron ✅ The correct answer is option A.
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