Portland cement contains :-
$(I)$ $Ca_2SiO_4$ $(II)$ $Ca_3SiO_5$ $(III)$ $Ca_3Al_2O_6$
$(I)$ $Ca_2SiO_4$ $(II)$ $Ca_3SiO_5$ $(III)$ $Ca_3Al_2O_6$
- A$I$ and $II$ only
- B$I$ and $III$ only
- C$II$ and $III$ only
- D$I$,$II$,and $III$
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