MCQ Practice__________ is the major constituent of the Portland cement.Subject: Chemical EngineeringTopic: Chemical ProcessACalcium carbonateBCalcium oxideCTricalcium silicateDCalcium sulphateCorrect Answer: CPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the