question_answer 65)

    Which of the following statements is not correct? (a) Copper liberates hydrogen from acids (b) In its higher oxidation states, manganese forms stable compounds with oxygen and fluorine (c) and  are oxidising agents in aqueous solution (d)  and  are reducing agents in aqueous solution

Answer:

                    (a) Copper lies below hydrogen in the electrochemical series and hence does not liberate  from acids. Therefore, option (a) is not correct. Other three options (b, c, d) are correct.