MCQ PracticeIn order to maintain a reducing atmosphere in a furnace, it should haveSubject: Chemical EngineeringTopic: Furnace TechnologyANo O 2 in flue gasBCO in flue gasCHigh excess airDNone of theseCorrect 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