Redox Reactions

JEE Advanced · Chemistry · 26 past questions

1. Q1 2025 Paper 1

   One of the products formed from the reaction of permanganate ion with iodide ion in neutral aqueous medium is

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2. Q2 2023 Paper 2

   H$_2$S (5 moles) reacts completely with acidified aqueous potassium permanganate solution. In this reaction…

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3. Q3 2023 Paper 2

   Consider the following molecules: Br$_3$O$_8$, F$_2$O, H$_2$S$_4$O$_6$, H$_2$S$_5$O$_6$, and C$_3$O$_2$.…

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4. Q4 2021 Paper 2

   Question Stem…

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5. Q5 2021 Paper 2

   Question Stem…

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6. Q6 2021 Paper 2

   Ozonolysis of ClO$_2$ produces an oxide of chlorine. The average oxidation state of chlorine in this oxide is…

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7. Q7 2020 Paper 1

   5.00 mL of 0.10 M oxalic acid solution taken in a conical flask is titrated against NaOH from a burette using…

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8. Q8 2020 Paper 2

   In the chemical reaction between stoichiometric quantities of KMnO$_4$ and KI in weakly basic solution, what…

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9. Q9 2018 Paper 2

   To measure the quantity of MnCl$_2$ dissolved in an aqueous solution, it was completely converted to KMnO$_4$…

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10. Q10 2016 Paper 1

    In neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidize thiosulphate…

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11. Q11 2015 Paper 1

    $\mathrm{Fe^{3+}}$ is reduced to $\mathrm{Fe^{2+}}$ by using

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12. Q12 2015 Paper 2

    In dilute aqueous $H_2SO_4$, the complex diaquodioxalatoferrate(II) is oxidized by $MnO_4^-$. For this…

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13. Q13 2014 Paper 1

    For the reaction…

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14. Q14 2014 Paper 1

    Consider the following list of reagents…

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15. Q15 2014 Paper 2

    Hydrogen peroxide in its reaction with KIO$_4$ and NH$_2$OH respectively, is acting as a

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16. Q16 2013 Paper 2

    The unbalanced chemical reactions given in List I show missing reagent or condition (?) which are provided in…

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17. Q17 2012 Paper 1

    Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?

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18. Q18 2012 Paper 2

    Paragraph for Questions 29 and 30…

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19. Q19 2011 Paper 1

    The difference in the oxidation numbers of the two types of sulphur atoms in $\mathrm{Na_2S_4O_6}$ is

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20. Q20 2011 Paper 1

    Reaction of $\mathrm{Br_2}$ with $\mathrm{Na_2CO_3}$ in aqueous solution gives sodium bromide and sodium…

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21. Q21 2011 Paper 2

    Reduction of the metal centre in aqueous permanganate ion involves

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22. Q22 2010 Paper 2

    Among the following, the number of elements showing only one non-zero oxidation state is…

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23. Q23 2010 Paper 2

    All the compounds listed in Column I react with water. Match the result of the respective reactions with the…

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24. Q24 2007 Paper 2

    Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine…

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25. Q25 2007 Paper 2

    Among the following, identify the correct statement.

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26. Q26 2007 Paper 2

    Match the reactions in Column I with nature of the reactions/type of the products in Column II. Indicate your…

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