Redox Reactions questions
1186 published questions with worked solutions.
- Given below are two statements : Statement I : H_2O_2 can act as both oxidising and reducing agent in basic medium. Statement II...
- 2MnO_4^-+bC_2O_4^ 2- +cH^+ xMn^ 2+ +yCO_2+zH_2O If the above equation is balanced with integer coefficients, the value of c is...
- 15 mL of aqueous solution of Fe^ 2+ in acidic medium completely reacted with 20mL of 0.03 M aqueous Cr_2O_7^ 2- solution. The...
- The oxidation states of nitrogen in NO, NO_2, N_2O and NO_3^- are in the order of :
- In basic medium, H_2O_2 exhibits which of the following reactions ? (A) Mn^ 2+ Mn^ 4+ (B) I_2 I^- (C) PbS PbSO_4 Choose the most...
- 10.0 ml of Na_2CO_3 solution is titrated against 0.2 M HCl solution. The following titre values were obtained in 5 readings 4.8...
- The species given below that does NOT show disproportionation reaction is :
- (A) HOCl+H_2O_2 H_3O^++Cl^-+O_2 (B) I_2+H_2O_2+2OH^- 2I^-+2H_2O+O_2^- Choose the correct option.
- The reaction of sulphur in alkaline medium is the below S_ 8(S) +aOH^-_ (aq) bS^ 2- _ (aq) +cS_2O_3^ 2- _ (aq) +dH_2O_ (l) . The...
- The number of moles of KMnO_ 4 reduced by one mole of KI in alkaline medium is :
- The oxidation states of 'P' in H_4P_2O_7, H_4P_2O_5 and H_4P_2O_6, respectively, are :
- 10.0 mL of 0.05 M KMnO_4 solution was consumed in a titration with 10.0 mL of given oxalic acid dihydrate solution. The strength...
- When 10 mL of an aqueous solution of KMnO_4 was titrated in acidic medium, equal volume of 0.1 M of an aqueous solution of...
- Consider titration of NaOH solution versus 1.25M oxalic acid solution. At the end point following burette readings were obtained....
- Which of the following equation depicts the oxidizing nature of H_2O_2?
- In basic medium CrO_4^ 2- oxidises S_2O_3^ 2- to form SO_4^ 2- and itself changes into Cr(OH)_4^-. The volume of 0.154 M CrO_4^...
- 0.4 g mixture of NaOH, Na_2CO_3 and some inert impurities was first titrated with N 10 HCl using phenolphthalein as an indicator....
- Identify the process in which change in the oxidation state is five :
- The correct order of following 3d metal oxides, according to their oxidation numbers is: (a) CrO_3 (b) Fe_2O_3 (c) MnO_2 (d)...
- When 10 mL of an aqueous solution of Fe^ 2+ ions was titrated in the presence of dil H_2SO using diphenylamine indicator, 15 mL...
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