Cement, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur, oxides of elements of which of the group (s) are present in the mixture ?

Cement, the important building material is a mixture of oxides of seve

1.	Cement, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur, oxides of elements of which of the group (s) are present in the mixture ?
Answer» Group-2 Group-2,13 and 14 Group-2 and 13 Group-2 and 14 SOLUTION :Cement is manufactured by COMBINING substances which are lime (CaO), CLAY contains Silica (SiO) and oxides of Al, Mg and iron. (i)CaO (50-60%) (ii)`SiO_2` (20-25%) (iii)`Al_2O_3` (5-10%) (iv)`SO_2` (1-2%) (V)`Fe_2O_3` (1-2%) (v) MgO(2-3%) Cement contains oxides of group-2 (Ca), group 13 (Al) and group-14 (Si).