Redox Reactions questions
1186 published questions with worked solutions.
- The number of elements from the following which exhibit(s) variable oxidation numbers is ____: Be, B, C, Na, F, Cl, Al, H, Li, O
- In S_4O_6^ 2- , the total number of S-atoms having oxidation number zero is ____.
- How many of the following statements refer to 'reduction'? 1. Removal of oxygen; 2. Addition of electropositive element; 3....
- How many of the following are oxidation half-reactions? 1. 2H^+_ (aq) H_ 2(g) ; 2. Zn_ (s) Zn^ 2+ _ (aq) ; 3. Cu^ 2+ _ (aq) Cu_...
- The average oxidation number of sulphur in Na_2S_4O_6 is ____.
- The average oxidation number of iron in Fe_3O_8 is ____.
- In how many of the following species does an element have a fractional (average) oxidation state? 1. C_3O_2; 2. Fe_3O_4; 3....
- The oxidation state of Cr in [Cr(H_2O)_4Cl_2]^+ is ____.
- In respiration, glucose reacts with O_2 to form CO_2 and H_2O, releasing energy. The oxidation number of carbon changes by ____...
- The oxidation state of the oxygen atom in KO_2 is ____.
- The oxidation number of Cr in Cr_2O_7^ 2- (aq) is ____.
- In TeO_3^ 2- TeO_4^ 2- , the oxidation number of Te changes by ____ unit(s).
- The sum of oxidation numbers of the 3 C-atoms in C_3O_2 is ____.
- The value 'y' for the following redox reaction occurring in basic medium is ____: a ,Cr(OH)_4^-+b ,ClO^-+c ,OH^- x ,CrO_4^ 2- +y...
- In how many of the following does chlorine have a positive oxidation number? HCl, Cl_2O, KCl, HOCl, Cl_2, MgCl_2, ClO_4^-, ClO_2
- The number of H^+_ (aq) ions to be added to the left-hand side in order to balance the following reaction occurring in acidic...
- Find the value of 'b' for the following half equation: Mn^ 2+ +xH_2O MnO_2+aH^++be^-
- The strength in volumes of a solution containing 30.36 g/L of H_2O_2 is [UP SEE 2004]
- In transforming 0.01 mole of PbS to PbSO_4, the volume of 10 volume H_2O_2 required will be
- The concentration of H_2O_2 solution of '10 volume' is
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