/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 7 : Redox Reactions This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 Oxidation number of sulphur in S₂O₃²⁻ is 2 2.5 5 6 2 / 10 Oxidation number of nitrogen in N₂O is 1 2 0 −1 3 / 10 In electrochemical cells, chemical energy is converted into Heat energy Electrical energy Nuclear energy Mechanical energy 4 / 10 Oxidation number of copper in Cu₂O is 1 2 3 0 5 / 10 In galvanic cells, oxidation occurs at Anode Cathode Salt bridge Electrolyte 6 / 10 Which compound contains two different oxidation states of the same element? SO₂ Fe₃O₄ CO₂ NH₃ 7 / 10 Which statement is correct? Oxidation and reduction occur separately Only oxidation occurs Only reduction occurs Both occur simultaneously 8 / 10 Which of the following acts as oxidising agent? Zn H₂ Mg Cu²⁺ 9 / 10 Which compound contains oxygen in positive oxidation state? H₂O H₂O₂ KO₂ OF₂ 10 / 10 Which reaction involves change in oxidation number but no electron exchange externally? Precipitation Disproportionation Neutralisation Hydrolysis Your score is 0% Restart quiz
