HomeEngineeringAlumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is 772. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens isBy Admin / September 6, 2025 A. 5CaO . 3 Al2O₃ B. 3CaO . Al2O₃ C. 3CaO . SiO₂ D. 2CaO . SiO₂ ✅ 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