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JEE Main

Redox Reactions

Chemistry

Previous Years Questions

Numerical

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Consider the following sulphur based oxoacids. $$\mathrm{H}_{2} \mathrm{SO}_{3}, \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm...
JEE Main 2022 (Online) 29th July Evening Shift
The disproportionation of $$\mathrm{MnO}_{4}^{2-}$$ in acidic medium resulted in the formation of two manganese compound...
JEE Main 2022 (Online) 28th July Morning Shift
The normality of $$\mathrm{H}_{2} \mathrm{SO}_{4}$$ in the solution obtained on mixing $$100 \mathrm{~mL}$$ of $$0.1 \,\...
JEE Main 2022 (Online) 27th July Evening Shift
The difference in oxidation state of chromium in chromate and dichromate salts is ___________.
JEE Main 2022 (Online) 24th June Morning Shift
The neutralization occurs when 10 mL of 0.1M acid 'A' is allowed to react with 30 mL of 0.05 M base M(OH)2. The basicity...
JEE Main 2022 (Online) 25th June Evening Shift
0.01 M KMnO4 solution was added to 20.0 mL of 0.05 M Mohr's salt solution through a burette. The initial reading of 50 m...
JEE Main 2022 (Online) 28th June Evening Shift
In mildly alkaline medium, thiosulphate ion is oxidized by $$MnO_4^ - $$ to "A". The oxidation state of sulphur in "A" i...
JEE Main 2021 (Online) 26th February Evening Shift
Dichromate ion is treated with base, the oxidation number of Cr in the product formed is ___________.
JEE Main 2021 (Online) 26th February Morning Shift

MCQ (Single Correct Answer)

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In neutral or faintly alkaline medium, $$\mathrm{KMnO}_{4}$$ being a powerful oxidant can oxidize, thiosulphate almost q...
JEE Main 2022 (Online) 29th July Morning Shift
The dark purple colour of $$\mathrm{KMnO}_{4}$$ disappears in the titration with oxalic acid in acidic medium. The overa...
JEE Main 2022 (Online) 26th July Morning Shift
Which of the given reactions is not an example of disproportionation reaction?
JEE Main 2022 (Online) 26th July Morning Shift
Which one of the following is an example of disproportionation reaction ?
JEE Main 2022 (Online) 26th June Evening Shift
Among the following, basic oxide is :
JEE Main 2022 (Online) 28th June Evening Shift
In the given chemical reaction, colors of the Fe2+ and Fe3+ ions, are respectively :5Fe2+ + MnO$$_4^ - $$ + 8H+ $$\to$$ ...
JEE Main 2021 (Online) 1st September Evening Shift
Experimentally reducing a functional group cannot be done by which one of the following reagents?
JEE Main 2021 (Online) 1st September Evening Shift
In which one of the following sets all species show disproportionation reaction?
JEE Main 2021 (Online) 31st August Evening Shift
Potassium permanganate on heating at 513 K gives a product which is :
JEE Main 2021 (Online) 27th August Evening Shift
The nature of oxides V2O3 and CrO is indexed as 'X' and 'Y' type respectively. The correct set of X and Y is :...
JEE Main 2021 (Online) 27th August Morning Shift
The incorrect statement is :
JEE Main 2021 (Online) 26th August Morning Shift
Match List - I with List - II : List - I List - II (a) NaOH (i) Acidic ...
JEE Main 2021 (Online) 27th July Morning Shift
The oxidation states of 'P' in H4P2O7, H4P2O5 and H4P2O6, respectively, are :...
JEE Main 2021 (Online) 27th July Morning Shift
Identify the process in which change in the oxidation state is five :
JEE Main 2021 (Online) 25th July Evening Shift
The oxidation states of nitrogen in NO, NO2, N2O and NO$$_3^ - $$ are in the order of :
JEE Main 2021 (Online) 18th March Evening Shift
The set that represents the pair of neutral oxides of nitrogen is :
JEE Main 2021 (Online) 17th March Evening Shift
Statement I : Sodium hydride can be used as an oxidising agent.Statement II : The lone pair of electrons on nitrogen in ...
JEE Main 2021 (Online) 16th March Evening Shift
Compound A used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound ...
JEE Main 2021 (Online) 26th February Morning Shift
Which of the following equation depicts the oxidizing nature of H2O2?
JEE Main 2021 (Online) 25th February Morning Slot
The incorrect statement among the following is :
JEE Main 2021 (Online) 24th February Evening Slot
The compound that cannot act both as oxidising and reducing agent is :
JEE Main 2020 (Online) 9th January Morning Slot
The redox reaction among the following is :
JEE Main 2020 (Online) 7th January Evening Slot
An example of a disproportionation reaction is :
JEE Main 2019 (Online) 12th April Morning Slot
In order to oxidise a mixture of one mole of each of FeC2O4, Fe2(C2O4)3, FeSO4 and Fe2(SO4)3 in acidic medium, the numbe...
JEE Main 2019 (Online) 8th April Morning Slot
In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one molecul...
JEE Main 2019 (Online) 10th January Evening Slot
In which of the following reactions, hydrogen peroxide acts as an oxidizing agent ?
JEE Main 2017 (Online) 8th April Morning Slot
Which of the following reactions is an example of a redox reaction?
JEE Main 2017 (Offline)
In which of the following reactions H2O2 acts as a reducing agent? 1. H2O2 + 2H+ + 2e- $$\to$$ 2H2O 2. H2O2 + 2e- $$\to$...
JEE Main 2014 (Offline)
Consider the following reaction: $$xMnO_4^- + yC_2O_4^{2-}$$ + zH+ $$\to$$ xMn2+ + 2yCO2 + $${z \over 2}{H_2}O$$ The val...
JEE Main 2013 (Offline)
Which of the following chemical reactions depicts the oxidizing behaviour of H2SO4?
AIEEE 2006
Which of the following is a redox reaction ?
AIEEE 2002

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