8 JEE Main 2026 Redox Reactions previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2026 previous-year questions from the Redox Reactions chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Redox Reactions chapter hub.
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…