Biochemistry What is the principle of the given test for Urine reducing substance? A Cu2+ ions are reduced to Cu+ ions by enediols B Cu+ ions are oxidised to Cu2+ ions by enediols C Fe2+ ions are reduced to Fe+ ions by enediols D Fe+ ions re oxidised to Fe2+ ions by enediols π‘ Explanation What is the principle of the given test for Urine reducing substance? β Correct Answer: A. Cu2+ ions are reduced to Cu+ ions by enediols