MCQ PracticeMain use of liquid nitrogen is inSubject: Chemical EngineeringTopic: Chemical ProcessARocket propulsionBMaking gun powderCDetergent manufactureDRefrigerative coolingCorrect Answer: DPractice 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