Home Science Quizzes Chemistry Quiz 3 Oxidation Number By Priyamstudycentre - December 30, 2020 7 Chemistry quiz-3 contains 10 questions on oxidation-reduction reaction and oxidation number of periodic table elements for different types of competitive exams. 1 / 10 The +3 oxidation state of sulfur is present in dithionous acid (H2S2O4) sulfurous acid (H2SO3) dithionic acid (H2S2O6) pyrosulfuric acid (H2S2O7) 2 / 10 In SO2 +2H2S → 3S +2H2O, the substance that is oxidized SO2 H2O S H2S 3 / 10 The oxidation state of cobalt in [Co(NH3)]Cl3 is +2 +4 +3 +5 4 / 10 The value of x in KAl(SO4)x, 12H2O is 1 2 3 4 5 / 10 The number of electrons required to reduce chromium completely in Cr2O7-2 to Cr+3 in an acidic medium is 5 3 6 2 6 / 10 The oxidation numbers of nitrogen in NH4NO3 -3, +6 +4, -5 -3, +5 -4, -6 7 / 10 The oxidation number of oxygen in the OF2 compound is -2 -1 +1 +2 8 / 10 What is the oxidation state of hydrogen in calcium hydride +1 +2 -1 -2 9 / 10 The oxidation number of sulfur is -2 in SO2 CS2 Na2SO4 Na2SO3 10 / 10 The oxidation state of the P atom in POCl3 is +5 +2 -5 +4 Your score is The average score is 27% LinkedIn Facebook Twitter 0% Restart quiz