MCQ PracticeThe presence of Cobalt in Vitamin B 12 was established for the first time bySubject: ChemistryTopic: ChemistryAHydrolysis testBSpectroscopyCBorax-Bead testDSodium Nitroprusside testCorrect 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