Redox Reactions

Class 11 · Chemistry

108 questions36 easy50 medium22 hard

Sample Questions

Q1.In a Daniell cell, the function of the salt bridge is to:

AAllow transfer of electrons
BPrevent mixing of solutions while maintaining electrical contact
CIncrease the voltage
DAct as a catalyst

Q2.The oxidation number of chlorine in HClO4 is:

Q3.Ozone (O3) acts only as an oxidant because:

AOxygen is in its lowest oxidation state
BOxygen in O3 can easily accept electrons due to its unstable nature
COxygen is in its highest oxidation state
DO3 is a very stable molecule

Q4.The rate of hydrogen evolution from acids is fastest with which metal?

AIron
BZinc
CMagnesium
DCopper

Q5.What is the oxidation number of S in H2S2O7?

Q6.This is a sample question to preview what you'll get in the full practice test...

A. Option one
B. Option two
C. Option three
D. Option four

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Concepts Covered

Activity series of metalsBalancing redox reactions - half reaction methodBalancing redox reactions - oxidation number methodClassical definition of oxidation and reductionCompetitive electron transferDaniell cellElectrode processesElectron transfer concept of redoxFluorine oxidation stateFractional oxidation numberGalvanic cellHalogen displacement reactionsMetal displacement reactionsNon-metal displacement reactionsOxidation as addition of oxygen or electronegative elementOxidation number of hydrogen in metal hydridesOxidation number of oxygen in peroxides and superoxidesOxidation number rulesOxidising agent and reducing agentRedox titrationsStandard electrode potentialStock notationTypes of redox reactions - combinationTypes of redox reactions - decompositionTypes of redox reactions - displacementTypes of redox reactions - disproportionation

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