MCQ PracticeMaximum permissible residual chlorine in treated water should be __________ mg/litre.Subject: Chemical EngineeringTopic: Environmental Engineering In CeA0.001 to 0.01B02 to 0.3C2 to 3D5 to 10Correct Answer: BPractice 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