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Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions Previous Year Questions for JEE

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Goodmarks offers 14+ JEE-style PYQs for Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions with detailed solutions. While official past papers rotate yearly, our bank covers the same concepts, difficulty, and question formats tested in JEE Chemistry.

Previous year questions are the fastest way to understand how Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions is tested in JEE. Practise 14+ exam-pattern MCQs modelled on JEE Main and Advanced, with full solutions for every question.

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Q1ChemistryUnit 7: Redox Reactions and Electrochemistry
An oxidation process involves:
Q2ChemistryUnit 7: Redox Reactions and Electrochemistry
The reaction that takes place when Cl2C l_{2} gas is passed through conc. NaOH solution is :
Q3ChemistryUnit 7: Redox Reactions and Electrochemistry
In the atmosphere of industrial smog, copper corrodes to form: This question has multiple correct options
Q4ChemistryUnit 7: Redox Reactions and Electrochemistry
Identity the compound in which phosphorus exists in the oxidation state of +1
Q5ChemistryUnit 7: Redox Reactions and Electrochemistry
One mole of HNO3H N O_{3} absorbs 5 moles of electrons in a redox reaction. The reduced product of this reaction is :
Q6ChemistryUnit 7: Redox Reactions and Electrochemistry
In the following redox reaction: Zn(s)+NO3−(aq)+H+(aq)⟶\boldsymbol{Z} \boldsymbol{n}(\boldsymbol{s})+\boldsymbol{N} \boldsymbol{O}_{\boldsymbol{3}}^{-}(\boldsymbol{a} \boldsymbol{q})+\boldsymbol{H}^{+}(\boldsymbol{a} \boldsymbol{q}) \longrightarrow Zn2+(aq)+NH4+(aq)Z n^{2+}(a q)+N H_{4}^{+}(a q) Zn(s)Z n(s) and NO3−(aq)N O_{3}^{-}(a q) respectively are respectively:
Q7ChemistryUnit 7: Redox Reactions and Electrochemistry
All dilute acids react with bleaching powder, liberating:
Q8ChemistryUnit 7: Redox Reactions and Electrochemistry
Out of the following redox reactions I⋅NH4NO3→ΔN2O+2H2O\boldsymbol{I} \cdot \boldsymbol{N} \boldsymbol{H}_{4} \boldsymbol{N} \boldsymbol{O}_{3} \stackrel{\Delta}{\rightarrow} \boldsymbol{N}_{2} \boldsymbol{O}+\boldsymbol{2} \boldsymbol{H}_{2} \boldsymbol{O} III.N H4NO2→ΔN2+2H2O\boldsymbol{H}_{4} \boldsymbol{N} \boldsymbol{O}_{2} \stackrel{\Delta}{\rightarrow} \boldsymbol{N}_{2}+\mathbf{2} \boldsymbol{H}_{2} \boldsymbol{O} IIII.PCl5→ΔPCl3+Cl2_{5} \stackrel{\Delta}{\rightarrow} P C l_{3}+C l_{2} disproportionation is not shown in:

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Why practise PYQs for Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions?

PYQs reveal recurring concepts, common traps, and the difficulty level JEE expects. Solving them builds exam temperament and time management.

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Our bank includes exam-style MCQs aligned with JEE Main Chemistry syllabus for Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions, covering the same topics as previous year papers.

How should I use PYQs for Redox Reactions and Electrochemistry?

Solve timed sets, review every explanation, note weak subtopics, then revisit with focused practice on Goodmarks.

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