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4984. Cement mainly contains

September 7, 2025 by Admin

CaO, SiO₂, Al2O₃

MgO, SiO₂, K₂O

Al2O₃, MgO, FE₂O₃

CaO, MgO, K₂O

✅ The correct answer is option A.

Categories Chemical Engineering, Chemical Process MCQs, Engineering Tags Chemical Engineering MCQs, Chemical Process MCQs, Engineering MCQs

4979. Hydrochloric acid is also known as

4988. The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

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