MCQ PracticeWhich of the following is generally considered as opaque surface towards radiations?Subject: Chemical EngineeringTopic: Heat TransferAGasesBSolidsCLiquidsDBoth B and CCorrect 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