HomeEngineeringWhich of the following is not an ore of copper? 166. Which of the following is not an ore of copper?By Admin / September 6, 2025 A. Cryolite B. Azurite C. Chalcopyrite D. Malachite ✅ 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