MCQ PracticeChemical formula of 'salt cake' isSubject: Chemical EngineeringTopic: Chemical ProcessANa 2 SO 4BCaSO 4CMgSO 4DBaSO 4Correct 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