107 JEE Main Redox Reactions PYQs (2002–2026) with verified answers and step-by-step solutions.
This page collects every JEE Main Redox Reactions previous-year question from Chemistry, 2002–2026. Each links to a full solution with a verified answer key. Click any year above to narrow the list, or open a question to study its step-by-step working and then practice it on PrepSharp's CBT player.
Given below are two statements: Statement I: Sodium dichromate and potassium dichromate are classified as primary stand…
Identify the correct statements : A. Hydrated salts can be used as primary standard. B. Primary standard should not und…
500 mL of 1.2 M KI solution is mixed with 500 mL of 0.2 M KMnO₄ solution in basic medium. The liberated iodine was titr…
500 mL of 0.2 M MnO₄⁻ solution in basic medium when mixed with 500 mL of 1.5 M KI solution, oxidises iodide ions to lib…
One mole of Cl₂(~g) was passed into 2 L of cold 2 M KOH solution. After the reaction, the concentrations of Cl⁻, ClO⁻an…
200 cc of x × 10⁻³ M potassium dichromate is required to oxidise 750 cc of 0.6 M Mohr's salt solution in acidic medium.…
X and Y are the number of electrons involved, respectively during the oxidation of I⁻to I₂ and S²⁻ to S by acidified K₂…
In order to oxidise a mixture of 1 mole each of FeC₂O₄, Fe₂(C₂O₄)₃, FeSO₄ and Fe₂(SO₄)₃ in acidic medium, the number of…
Compounds that should not be used as primary standards in titrimetric analysis are : A. Na₂ Cr₂ O₇ B. Oxalic acid C. Na…
0.1 M solution of KI reacts with excess of H₂ SO₄ and KIO₃ solutions. According to equation 5 I⁻+IO₃⁻+6 H⁺ → 3 I₂+3 H₂…
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