Chemistry · JEE

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

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The most important Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions questions for JEE cover conceptual traps, standard results, and numerical patterns from Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions. Goodmarks provides 14+ high-yield MCQs with full solutions.

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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

C 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

H 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:

\boldsymbol{Z} \boldsymbol{n}(\boldsymbol{s})+\boldsymbol{N} \boldsymbol{O}_{\boldsymbol{3}}^{-}(\boldsymbol{a} \boldsymbol{q})+\boldsymbol{H}^{+}(\boldsymbol{a} \boldsymbol{q}) \longrightarrow

Z n^{2+}(a q)+N H_{4}^{+}(a q)

Z n(s)

and

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

\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

\boldsymbol{H}_{4} \boldsymbol{N} \boldsymbol{O}_{2} \stackrel{\Delta}{\rightarrow} \boldsymbol{N}_{2}+\mathbf{2} \boldsymbol{H}_{2} \boldsymbol{O}

IIII.PCl

_{5} \stackrel{\Delta}{\rightarrow} P C l_{3}+C l_{2}

disproportionation is not shown in:

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What makes a Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Redox Reactions and Electrochemistry are high-weightage?

Key areas include Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions. Prioritise these before moving to edge cases.

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