MCQ PracticeMetallic soap (e.g. aluminium or calcium salts of fatty acids) can be usedSubject: Chemical EngineeringTopic: Chemical ProcessAAs a lubricantBAs a rust preventiveCIn hard water for cleaning of clothDAs a foam depressant in distillation columnCorrect 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