MCQ PracticePortland cement consists mainly ofSubject: Chemical EngineeringTopic: Chemical ProcessACaO & SiO 2BSiO 2 & Al 2 O 3CCaO & Al 2 O 3DCaO & FE 2 O 3Correct Answer: APractice 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