‚Äö√Ñ√∂‚àö√ë‚àöœÄPortland cement is composed of four major oxides (CaO, SiO2, Al2O3, Fe2O3 ‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢90%)‚Äö√Ñ√∂‚àö√ë‚àöœÄ. Is this statement true or false.

‚Äö√Ñ√∂‚àö√ë‚àöœÄPortland cement is composed o

1.	‚Äö√Ñ√∂‚àö√ë‚àöœÄPortland cement is composed of four major oxides (CaO, SiO2, Al2O3, Fe2O3 ‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢90%)‚Äö√Ñ√∂‚àö√ë‚àöœÄ. Is this statement true or false.
A.	True
B.	False
Answer» B. False