MCQ PracticeIn an ammonia plant, the purge off is essential toSubject: Chemical EngineeringTopic: Fertiliser TechnologyAMaintain inert gas concentration within a limitBRemove excess poisonous gasesCMaintain H 2 : N 2 ratio at 3 : 1DRemove uncondensed ammonia vapourCorrect 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