My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
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.

17Papers
14Years
21Questions
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.

Not classified 18 85.7%
Easy 3 14.3%

Question type distribution

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

Multiple Choices 21 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
21 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
21 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Redox Reactions
21 Qs

Paper coverage

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

NEET 2025
1 Qs
NEET 2024
1 Qs
NEET 2024 RE EXAMINATION
1 Qs
NEET 2023
1 Qs
NEET 2023 MANIPUR
1 Qs
NEET 2022 PHASE 2
1 Qs
NEET 2020 PHASE 1
1 Qs
AIIMS 2019
1 Qs
NEET 2019
1 Qs
NEET 2018
2 Qs
NEET 2016 PHASE 2
1 Qs
AIPMT 2014
3 Qs
AIPMT 2012 PRELIMS
2 Qs
AIPMT 2009
1 Qs
AIPMT 2008
1 Qs
AIPMT 2004
1 Qs
AIPMT 2003
1 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
NEET 202520251View paper
NEET 202420241View paper
NEET 2024 RE EXAMINATION20241View paper
NEET 202320231View paper
NEET 2023 MANIPUR20231View paper
NEET 2022 PHASE 220221View paper
NEET 2020 PHASE 120201View paper
AIIMS 201920191View paper
NEET 201920191View paper
NEET 201820182View paper
NEET 2016 PHASE 220161View paper
AIPMT 201420143View paper
AIPMT 2012 PRELIMS20122View paper
AIPMT 200920091View paper
AIPMT 200820081View paper
AIPMT 200420041View paper
AIPMT 200320031View paper

All Redox Reactions previous year questions

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

1
2003 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2003
The oxidation states of sulphur in the anions

SO3\({_3^{2 - }}\), S2O\({_4^{2 - }}\) and S2O\({_6^{2 - }}\) follow the order
A
S2O\({_4^{2 - }}\) < SO\({_3^{2 - }}\) < S2O\({_6^{2 - }}\)
B
SO\({_3^{2 - }}\) < S2O\({_4^{2 - }}\) < S2O\({_6^{2 - }}\)
C
S2O\({_4^{2 - }}\) < S2O\({_6^{2 - }}\) < SO\({_3^{2 - }}\)
D
S2O\({_6^{2 - }}\) < S2O\({_4^{2 - }}\) < SO\({_3^{2 - }}\)
Open complete paper
2
2004 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2004
Which is the best description of the behaviour of bromine in the reaction given below?
H2O + Br2 \(\to\) HOBr + HBr
A
Proton acceptor only
B
Both oxidised and reduced
C
Oxidised only
D
Reduced only
Open complete paper
3
2008 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2008
Number of moles of MnO\(_4^{ - }\) required to oxidize one mole of ferrous oxalate completely in acidic medium will be
A
7.5 moles
B
0.2 moles
C
0.6 moles
D
0.4 moles
Open complete paper
4
2009 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2009
Oxidation numbers of P in PO\(_4^{3 - }\), of S in SO\(_4^{2 - }\) and that of Cr in Cr2O\(_7^{2 - }\) are respectively
A
+3, +6 and +5
B
+5, +3 and +6
C
\(-\)3, +6 and + 6
D
+5, +6 and +6
Open complete paper
5
2012 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2012 PRELIMS
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?
A
S
B
H
C
Cl
D
C
Open complete paper
6
2012 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2012 PRELIMS
When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
A
zero to +1 and zero to \(-\)5
B
zero to \(-\)1 and zero to +5
C
zero to \(-\)1 and zero to +3
D
zero to +1 and zero to \(-\)3
Open complete paper
7
2014 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2014
In acidic medium, H2O2 changes Cr2O72- to CrO5 which has two

(\(-\)O\(-\)O\(-\)) bonds. Oxidation state of Cr in CrO5 is
A
+5
B
+3
C
+6
D
\(-\)10
Open complete paper
8
2014 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2014
(I)   H2O2 + O3 \(\to\) H2O + 2O2
(II)   H2O2 + Ag2O \(\to\) 2Ag + H2O + O2
Role of Hydrogen peroxide in the above reactions is respectvely
A
oxidizing in (I) and reducing in (II)
B
reducing in (I) and oxidizing (II)
C
reducing in (I) and (II)
D
oxidizing in (I) and (II)
Open complete paper
9
2014 · Chemistry · Physical Chemistry · Redox Reactions
AIPMT 2014
The pair of compounds that can exist together is
A
FeCl3, SnCl2
B
HgCl2, SnCl2
C
FeCl2, SnCl2
D
FeCl3, KI
Open complete paper
10
2016 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2016 PHASE 2
Hot concentrated sulphate acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?
A
Cu + 2H2SO4 \(\to\) CuSO4 + SO2 + 2H2O
B
S + 2H2SO4 \(\to\) 3SO2 + 2H2O
C
C + 2H2SO4 \(\to\) CO2 + 2SO2 + 2H2O
D
CaF2 + H2SO4 \(\to\) CaSO4 + 2HF
Open complete paper
11
2018 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2018
The correct order of N-compounds in its decreasing order of oxidation states is
A
HNO3 , NO, N2 , NH4Cl
B
HNO3 , NO, NH4Cl, N2
C
HNO3 , NH4Cl, NO, N
D
NH4Cl, N2 , NO, HNO3
Open complete paper
12
2018 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2018
For the redox reaction,
MnO4– + C2O4 2– + H+ \(\to\) Mn2+ + CO2 + H2O
The correct coefficients of the reactants for the balanced equation are
A
MnO4- C2O42- H+
16 5 2
B
MnO4- C2O42- H+
2 5 16
C
MnO4- C2O42- H+
2 16 5
D
MnO4- C2O42- H+
5 16 2
Open complete paper
13
2019 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2019
Which of the following reactions are disproportionation reaction?

(a) 2Cu+ \(\to\) Cu2+ + Cu0
(b) 3MnO42- + 4H+ \(\to\) 2MnO4- + MnO2 + 2H2O
(c) 2KMnO4 \(\buildrel \Delta \over \longrightarrow\) K2MnO4 + MnO2 + O2
(d) 2MnO4- + 3Mn2+ + 2H2O \(\to\) 5MnO2 + 4\({H^ \oplus }\)

Select the correct option from the following :
A
(a), (c) and (d)
B
(a) and (b) only
C
(a) and (d) only
D
(a), (b) and (c)
Open complete paper
14
2020 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2020 PHASE 1
What is the change in oxidation number of carbon in the following reaction?
CH4(g) + 4Cl2(g) \(\to\) CCl4(l) + 4HCl(g)
A
0 to + 4
B
\(-\)4 to + 4
C
0 to \(-\) 4
D
+ 4 to + 4
Open complete paper
15
2022 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2022 PHASE 2

Which of the following reactions is a decomposition redox reaction?

A
P4(s) + 3OH\(-\)(aq) + 3H2O(l) \(\to\) PH3(g) + 3H2PO\(_2^ -\)(aq)
B
2Pb(NO3)2(s) \(\to\) 2PbO(s) + 4NO2(g) + O2(g)
C
N2(g) + O2(g) \(\to\) 2NO(g)
D
Cl2(g) + 2OH\(-\)(aq) \(\to\) ClO\(-\)(aq) + Cl\(-\)(aq) + 4H2O(l)
Open complete paper
16
2023 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2023

On balancing the given redox reaction,

$$\mathrm{aCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{bSO}_{3}^{2-}(\mathrm{aq})+\mathrm{cH}^{+}(\mathrm{aq}) \rightarrow 2 \mathrm{aCr}^{3+}(\mathrm{aq})+\mathrm{bSO}_{4}^{2-}(\mathrm{aq})+\frac{\mathrm{c}}{2} \mathrm{H}_{2} \mathrm{O}(\ell)$$

the coefficients \(\mathrm{a}, \mathrm{b}\) and \(\mathrm{c}\) are found to be, respectively -

A
3, 8, 1
B
1, 8, 3
C
8, 1, 3
D
1, 3, 8
Open complete paper
17
2023 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2023 MANIPUR

The correct option for a redox couple is:

A
Both are oxidised forms involving same element.
B
Both are reduced forms involving same element.
C
Both the reduced and oxidised forms involve same element.
D
Cathode and anode together.
Open complete paper
18
2024 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2024

Which reaction is NOT a redox reaction?

A
\(\mathrm{Zn}+\mathrm{CuSO}_4 \rightarrow \mathrm{ZnSO}_4+\mathrm{Cu}\)
B
\(2 \mathrm{KClO}_3+\mathrm{I}_2 \rightarrow 2 \mathrm{KIO}_3+\mathrm{Cl}_2\)
C
\(\mathrm{H}_2+\mathrm{Cl}_2 \rightarrow 2 \mathrm{HCl}\)
D
\(\mathrm{BaCl}_2+\mathrm{Na}_2 \mathrm{SO}_4 \rightarrow \mathrm{BaSO}_4+2 \mathrm{NaCl}\)
Open complete paper
19
2024 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2024 RE EXAMINATION

The oxidation states not shown by Mn in given reaction is :

$$3 \mathrm{MnO}_4^{2-}+4 \mathrm{H}^{+} \longrightarrow 2 \mathrm{MnO}_4^{-}+\mathrm{MnO}_2+2 \mathrm{H}_2 \mathrm{O}$$

A. +6

B. +2

C. +4

D. +7

E. +3

Choose the most appropriate answer from the options given below :

A
D and E only
B
B and D only
C
A and B only
D
B and E only
Open complete paper
20
2025 · Chemistry · Physical Chemistry · Redox Reactions
NEET 2025

Consider the following compounds :

${\mathrm{\underline{K}O}}_2, \mathrm{H}_2 \underline{\mathrm{O}}_2$ and $\mathrm{H}_2 \underline{S }O_4$

The oxidation state of the underlined elements in them are, respectively,

A
$+1,-2$, and +4
B
$+4,-4$, and +6
C
$+1,-1$, and +6
D
$+2,-2$, and +6
Open complete paper

Showing 20 of 21 questions