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 is_____________________? | MCQ Hive

Chemical Engineering

Q 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 is_____________________?

A A. 5cao. 3 al2o3
B B. 3cao. al2o3
C C. 3cao. sio2
D D. 2cao. sio2

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