General Science Chemistry Basic Concepts of Chemistry

పోర్ట్‌లాండ్ సిమెంట్ యొక్క ప్రాథమిక భాగాలు ఏమిటి?

1
ZnSO4, CaCl2, Al2(SO4)3, CuSO4
2
CaOCl3, MgSO4, Al2(SO4)3, ZnSO4
3
CaCl2, MgCl2, Al2(SO4)3, ZnSO4
4
CaO, SiO2, Al2O3, Fe2O3

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