Redox Reactions questions
1186 published questions with worked solutions.
- When Cl _2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
- (a) H _2 O _2 + O _3 H _2 O + 2 O _2 (b) H _2 O _2 + Ag _2 O 2 Ag + H _2 O + O _2 Role of hydrogen peroxide in the above...
- In acidic medium, H _2 O _2 changes Cr _2 O _7^ 2- to CrO _5 which has two (- O - O -) bonds. Oxidation state of Cr in CrO _5 is
- The reaction of aqueous KMnO _4 with H _2 O _2 in acidic conditions gives :
- Which of the following processes does not involve oxidation of iron ?
- The correct order of N-compounds in its decreasing order of oxidation states is
- For the redox reaction MnO _4^- + C _2 O _4^ 2- + H ^+ Mn ^ 2+ + CO _2 + H _2 O The correct coefficients of the reactants for the...
- Which of the following reactions are disproportionation reaction? (a) 2 Cu ^ + Cu ^ 2+ + Cu ^ 0 (b) 3 MnO _4^ 2- + 4 H ^ + 2 MnO...
- What is the oxidation number of underlined species in P F_6^- and V _2O_7^ 4- ions respectively?
- In which of the following compounds chlorine has highest oxidation state?
- Identify the element reduced in following reaction Cr _2 O _7^ 2- + 14 H ^+ + 6 I ^- 2 Cr ^ 3+ + 3 H _2 O + 3 I _2
- What is oxidation state of S in SO_4^ 2- ?
- Which compound from following contains iodine with highest oxidation number?
- Which of the following correctly represents the process of reduction?
- What is oxidation number of oxygen in OF_2?
- Which is an oxidizing agent in following reaction? Fe_ (s) + Cu^ 2+ _ aq Fe^ 2+ _ aq + Cu_ (s)
- How many mole of electrons are required for the reduction of 1 mole of Cr^ 3+ to Cr_ (s) ?
- What is the oxidation state of oxygen in O_2^ 2- ion?
- What is oxidation state of Mn in MnO_4^ -1 ?
- What is oxidation state of Cl in KClO_3 ?
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