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Previous year question hub

Redox Reactions - Physical Chemistry - Chemistry Previous Year Questions

Practice Redox Reactions - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

27Papers
24Years
37Questions
1Topics

Redox Reactions question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Redox Reactions. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 22 56.4%
Easy 12 30.8%
Hard 4 10.3%
Not classified 1 2.6%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 13 33.3%
Subjective 13 33.3%
MSQ 7 17.9%
Numerical Answer Type (NAT) 6 15.4%

Subject weightage

Top subjects by unique question coverage.

Chemistry
37 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
37 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Redox Reactions
37 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE Advanced 2026 Paper 1 Online
1 Qs
JEE Advanced 2026 Paper 1 Online
1 Qs
JEE Advanced 2026 Paper 1 Online
1 Qs
JEE ADVANCED 2025 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2021 PAPER 2 ONLINE
3 Qs
JEE ADVANCED 2020 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2017 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2016 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2015 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2014 PAPER 1 OFFLINE
2 Qs
IIT JEE 2011 PAPER 1 OFFLINE
1 Qs
IIT JEE 2011 PAPER 2 OFFLINE
1 Qs
IIT JEE 2007 PAPER 2 OFFLINE
1 Qs
IIT JEE 2001 SCREENING
1 Qs
IIT JEE 2000 SCREENING
1 Qs
IIT JEE 1999
1 Qs
IIT JEE 1997
1 Qs
IIT JEE 1995
1 Qs
IIT JEE 1992
1 Qs
IIT JEE 1991
1 Qs
IIT JEE 1990
1 Qs
IIT JEE 1988
1 Qs
IIT JEE 1986
5 Qs
IIT JEE 1983
5 Qs
IIT JEE 1982
1 Qs
IIT JEE 1981
2 Qs
IIT JEE 1980
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE Advanced 2026 Paper 1 Online20261View paper
JEE Advanced 2026 Paper 1 Online20261View paper
JEE Advanced 2026 Paper 1 Online20261View paper
JEE ADVANCED 2025 PAPER 1 ONLINE20251View paper
JEE ADVANCED 2021 PAPER 2 ONLINE20213View paper
JEE ADVANCED 2020 PAPER 2 OFFLINE20201View paper
JEE ADVANCED 2017 PAPER 2 OFFLINE20171View paper
JEE ADVANCED 2016 PAPER 1 OFFLINE20161View paper
JEE ADVANCED 2015 PAPER 1 OFFLINE20151View paper
JEE ADVANCED 2014 PAPER 1 OFFLINE20142View paper
IIT JEE 2011 PAPER 1 OFFLINE20111View paper
IIT JEE 2011 PAPER 2 OFFLINE20111View paper
IIT JEE 2007 PAPER 2 OFFLINE20071View paper
IIT JEE 2001 SCREENING20011View paper
IIT JEE 2000 SCREENING20001View paper
IIT JEE 199919991View paper
IIT JEE 199719971View paper
IIT JEE 199519951View paper
IIT JEE 199219921View paper
IIT JEE 199119911View paper
IIT JEE 199019901View paper
IIT JEE 198819881View paper
IIT JEE 198619865View paper
IIT JEE 198319835View paper
IIT JEE 198219821View paper
IIT JEE 198119812View paper
IIT JEE 198019801View paper

All Redox Reactions previous year questions

Practice every matching question in batches of 20, with every available option.

1
1980 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1980
M is molecular weight of KMnO4. The equivalent wight of KMnO4 when it is converted into K2MnO4 is
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2
1981 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1981
1 mole of N2H4 loses 10 moles of electrons to form a new compound Y. assuming that all nitrogen appears in the new compound , what is the oxidation state of nitrogen in Y ? (there is no change in the oxidation state of hydrogen)
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3
1981 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1981
Balance the following Equations:

(i) Cu2O + H+ + \(NO_3^ - \to\) Cu2+ + NO + H2O

(ii) K4[Fe(CN)6] + H2SO4 + H2O \(\to\) K2SO4 + FeSO4 + (NH4)2SO4 + CO

(iii) C2H5OH + I2 + OH- \(\to\) CHI3 + \(HCO_3^-\) + I- + 4H2O
Open complete paper
4
1982 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1982
The oxidation number of carbon in CH2O is
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5
1983 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1983
Complete and balance the following equation:

Ce3+ + \(S_2O_8^{-2} \to\) \(SO_4^{-2}\) + Ce4+
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6
1983 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1983
Complete and balance the following equation:

HNO3 + HCl \(\to\) NO + Cl2
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7
1983 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1983
Complete and balance the following equations:

Cl2 + OH- \(\to\) Cl- + ClO-
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8
1983 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1983
Complete and balance the following equation:

\(Cr_2O_7^{2-}\) + C2H4O \(\to\) C2H4O2 + Cr3+
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9
1983 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1983
Complete and balance the following equation:

Zn + \(NO_3^- \to\) Zn2+ + \(NH_4^+\)
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10
1986 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1986
Complete and balance the following equation:

\(ClO_3^-\) + I- + H2SO4 \(\to\) Cl- + \(HSO_4^-\)
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11
1986 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1986
Complete and balance the following equation:

Ag+ + AsH3 \(\to\) H3AsO3 + H+
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12
1986 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1986
Arrange the following in increasing oxidation number of iodine.

I2, HI, HIO4, ICl
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13
1986 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1986
Complete and balance the following equation:

Mn2+ + PbO2 \(\to\) \(MnO_4^-\) + H2O
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14
1986 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1986
Complete and balance the following equation:

S + OH- \(\to\) S2- + \(S_2O_3^-\)
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15
1988 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1988
The equivalent weight of MnSO4 is half of its molecular weight, when it converts to
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16
1990 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1990
The oxidation number of phosphorus in Ba(H2PO2) is :
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17
1991 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1991
The volume strength of 1.5 N H2O2 solution is
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18
1992 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1992
For the redox reaction:
\(MnO_4^ - + {C_2}O_4^{ - 2} + {H^ + }\) \(\to M{n^{2 + }} + C{O_2} + {H_2}O\)
The correct coefficients of the reactants for the balanced reaction are
Open complete paper
19
1995 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1995
A 5.0 cm3 solution of H2O2 liberates 0.508 g of iodine from an acidified KI solution. Calculate the strength of H2O2 solution in terms of volume strength at STP.
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20
1997 · Chemistry · Physical Chemistry · Redox Reactions
IIT JEE 1997
To a 25ml H2O2 solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 ml of 0.3 N sodium thiosulphate solution. Calculate the volume strength of H2O2 solution.
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Showing 20 of 37 questions