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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.

54Papers
7Years
65Questions
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 65 100%

Question type distribution

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

Multiple Choices 65 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
65 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
65 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Redox Reactions
65 Qs

Paper coverage

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

MHT CET 2025 21ST APRIL EVENING SHIFT
2 Qs
MHT CET 2025 21ST APRIL MORNING SHIFT
2 Qs
MHT CET 2025 22ND APRIL EVENING SHIFT
2 Qs
MHT CET 2025 25TH APRIL EVENING SHIFT
2 Qs
MHT CET 2025 25TH APRIL MORNING SHIFT
2 Qs
MHT CET (PCB) 2025 9th April Evening Shift
1 Qs
MHT CET 2025 19TH APRIL EVENING SHIFT
1 Qs
MHT CET 2025 19TH APRIL MORNING SHIFT
1 Qs
MHT CET 2025 20TH APRIL EVENING SHIFT
1 Qs
MHT CET 2025 20TH APRIL MORNING SHIFT
1 Qs
MHT CET 2025 22ND APRIL MORNING SHIFT
1 Qs
MHT CET 2025 23RD APRIL EVENING SHIFT
1 Qs
MHT CET 2025 23RD APRIL MORNING SHIFT
1 Qs
MHT CET 2025 26TH APRIL EVENING SHIFT
1 Qs
MHT CET 2025 26TH APRIL MORNING SHIFT
1 Qs
MHT CET 2024 10TH MAY MORNING SHIFT
2 Qs
MHT CET (PCB) 2024 22th April Evening Shift
1 Qs
MHT CET 2024 10TH MAY EVENING SHIFT
1 Qs
MHT CET 2024 11TH MAY EVENING SHIFT
1 Qs
MHT CET 2024 11TH MAY MORNING SHIFT
1 Qs
MHT CET 2024 15TH MAY EVENING SHIFT
1 Qs
MHT CET 2024 15TH MAY MORNING SHIFT
1 Qs
MHT CET 2024 16TH MAY EVENING SHIFT
1 Qs
MHT CET 2024 16TH MAY MORNING SHIFT
1 Qs
MHT CET 2024 2ND MAY MORNING SHIFT
1 Qs
MHT CET 2024 3RD MAY EVENING SHIFT
1 Qs
MHT CET 2024 3RD MAY MORNING SHIFT
1 Qs
MHT CET 2024 4TH MAY EVENING SHIFT
1 Qs
MHT CET 2024 4TH MAY MORNING SHIFT
1 Qs
MHT CET 2024 9TH MAY EVENING SHIFT
1 Qs
MHT CET 2024 9TH MAY MORNING SHIFT
1 Qs
MHT CET 2023 10TH MAY EVENING SHIFT
1 Qs
MHT CET 2023 10TH MAY MORNING SHIFT
1 Qs
MHT CET 2023 11TH MAY EVENING SHIFT
1 Qs
MHT CET 2023 12TH MAY EVENING SHIFT
1 Qs
MHT CET 2023 13TH MAY EVENING SHIFT
1 Qs
MHT CET 2023 13TH MAY MORNING SHIFT
1 Qs
MHT CET 2023 14TH MAY EVENING SHIFT
1 Qs
MHT CET 2023 14TH MAY MORNING SHIFT
1 Qs
MHT CET 2023 9TH MAY MORNING SHIFT
1 Qs
MHT CET 2022 11TH AUGUST EVENING SHIFT
1 Qs
MHT CET 2021 24TH SEPTEMBER EVENING SHIFT
2 Qs
MHT CET 2021 20TH SEPTEMBER EVENING SHIFT
1 Qs
MHT CET 2021 20TH SEPTEMBER MORNING SHIFT
1 Qs
MHT CET 2021 21TH SEPTEMBER MORNING SHIFT
1 Qs
MHT CET 2021 22TH SEPTEMBER EVENING SHIFT
1 Qs
MHT CET 2021 22TH SEPTEMBER MORNING SHIFT
1 Qs
MHT CET 2021 24TH SEPTEMBER MORNING SHIFT
1 Qs
MHT CET 2020 16TH OCTOBER EVENING SHIFT
1 Qs
MHT CET 2020 16TH OCTOBER MORNING SHIFT
1 Qs
MHT CET 2020 19TH OCTOBER EVENING SHIFT
1 Qs
MHT CET 2019 2ND MAY EVENING SHIFT
3 Qs
MHT CET 2019 3RD MAY MORNING SHIFT
3 Qs
MHT CET 2019 2ND MAY MORNING SHIFT
1 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
MHT CET (PCB) 2025 9th April Evening Shift20251View paper
MHT CET 2025 19TH APRIL EVENING SHIFT20251View paper
MHT CET 2025 19TH APRIL MORNING SHIFT20251View paper
MHT CET 2025 20TH APRIL EVENING SHIFT20251View paper
MHT CET 2025 20TH APRIL MORNING SHIFT20251View paper
MHT CET 2025 21ST APRIL EVENING SHIFT20252View paper
MHT CET 2025 21ST APRIL MORNING SHIFT20252View paper
MHT CET 2025 22ND APRIL EVENING SHIFT20252View paper
MHT CET 2025 22ND APRIL MORNING SHIFT20251View paper
MHT CET 2025 23RD APRIL EVENING SHIFT20251View paper
MHT CET 2025 23RD APRIL MORNING SHIFT20251View paper
MHT CET 2025 25TH APRIL EVENING SHIFT20252View paper
MHT CET 2025 25TH APRIL MORNING SHIFT20252View paper
MHT CET 2025 26TH APRIL EVENING SHIFT20251View paper
MHT CET 2025 26TH APRIL MORNING SHIFT20251View paper
MHT CET (PCB) 2024 22th April Evening Shift20241View paper
MHT CET 2024 10TH MAY EVENING SHIFT20241View paper
MHT CET 2024 10TH MAY MORNING SHIFT20242View paper
MHT CET 2024 11TH MAY EVENING SHIFT20241View paper
MHT CET 2024 11TH MAY MORNING SHIFT20241View paper
MHT CET 2024 15TH MAY EVENING SHIFT20241View paper
MHT CET 2024 15TH MAY MORNING SHIFT20241View paper
MHT CET 2024 16TH MAY EVENING SHIFT20241View paper
MHT CET 2024 16TH MAY MORNING SHIFT20241View paper
MHT CET 2024 2ND MAY MORNING SHIFT20241View paper
MHT CET 2024 3RD MAY EVENING SHIFT20241View paper
MHT CET 2024 3RD MAY MORNING SHIFT20241View paper
MHT CET 2024 4TH MAY EVENING SHIFT20241View paper
MHT CET 2024 4TH MAY MORNING SHIFT20241View paper
MHT CET 2024 9TH MAY EVENING SHIFT20241View paper
MHT CET 2024 9TH MAY MORNING SHIFT20241View paper
MHT CET 2023 10TH MAY EVENING SHIFT20231View paper
MHT CET 2023 10TH MAY MORNING SHIFT20231View paper
MHT CET 2023 11TH MAY EVENING SHIFT20231View paper
MHT CET 2023 12TH MAY EVENING SHIFT20231View paper
MHT CET 2023 13TH MAY EVENING SHIFT20231View paper
MHT CET 2023 13TH MAY MORNING SHIFT20231View paper
MHT CET 2023 14TH MAY EVENING SHIFT20231View paper
MHT CET 2023 14TH MAY MORNING SHIFT20231View paper
MHT CET 2023 9TH MAY MORNING SHIFT20231View paper
MHT CET 2022 11TH AUGUST EVENING SHIFT20221View paper
MHT CET 2021 20TH SEPTEMBER EVENING SHIFT20211View paper
MHT CET 2021 20TH SEPTEMBER MORNING SHIFT20211View paper
MHT CET 2021 21TH SEPTEMBER MORNING SHIFT20211View paper
MHT CET 2021 22TH SEPTEMBER EVENING SHIFT20211View paper
MHT CET 2021 22TH SEPTEMBER MORNING SHIFT20211View paper
MHT CET 2021 24TH SEPTEMBER EVENING SHIFT20212View paper
MHT CET 2021 24TH SEPTEMBER MORNING SHIFT20211View paper
MHT CET 2020 16TH OCTOBER EVENING SHIFT20201View paper
MHT CET 2020 16TH OCTOBER MORNING SHIFT20201View paper
MHT CET 2020 19TH OCTOBER EVENING SHIFT20201View paper
MHT CET 2019 2ND MAY EVENING SHIFT20193View paper
MHT CET 2019 2ND MAY MORNING SHIFT20191View paper
MHT CET 2019 3RD MAY MORNING SHIFT20193View paper

All Redox Reactions previous year questions

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

1
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 2ND MAY EVENING SHIFT

The ionic charges of manganate and permanganate ion are respectively

A
$-2,-2$
B
$-1,-2$
C
$-2,-1$
D
$-1,-1$
Open complete paper
2
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 2ND MAY EVENING SHIFT

The oxidation number of sulphur in $\mathrm{S}_8$ molecule is

A
6
B
0
C
2
D
3
Open complete paper
3
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 2ND MAY EVENING SHIFT

The oxidation state of sulphur in $\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_7$ is

A
+4
B
+6
C
+5
D
+7
Open complete paper
4
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 2ND MAY MORNING SHIFT

$$\begin{aligned} & \text { In the reaction, } \\ & \mathrm{MnO}_4^{-1}(a q)+\mathrm{Br}^{-1}(a q) \longrightarrow \mathrm{MnO}_2(s)+\mathrm{BrO}_3^{-1}(a q) \end{aligned}$$

,the correct change in oxidation number of the species involved is

A
$\mathrm{Br}^{+5}$ to $\mathrm{Br}^{-1}$
B
$\mathrm{Mn}^{+7}$ to $\mathrm{Mn}^{+2}$
C
$\mathrm{Mn}^{+7}$ to $\mathrm{Mn}^{+3}$
D
$\mathrm{Br}^{-1}$ to $\mathrm{Br}^{+5}$
Open complete paper
5
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 3RD MAY MORNING SHIFT

Oxidation state of nitrogen in nitric oxide is

A
+2
B
+3
C
+4
D
$-$2
Open complete paper
6
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 3RD MAY MORNING SHIFT

Which of the following oxides can act both as an oxidising agent as well as reducing agent?

A
$\mathrm{N}_2 \mathrm{O}$
B
$\mathrm{SO}_2$
C
$\mathrm{SO}_3$
D
$\mathrm{P}_2 \mathrm{O}_5$
Open complete paper
7
2019 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2019 3RD MAY MORNING SHIFT

In which among the following compounds, oxidation number of nitrogen is +5 ?

A
$\mathrm{N}_2 \mathrm{O}$
B
$\mathrm{N}_2 \mathrm{O}_3$
C
$\mathrm{NO}_2$
D
$\mathrm{HNO}_3$
Open complete paper
8
2020 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2020 16TH OCTOBER EVENING SHIFT

Which among the following is used as an oxidising agent to bleach wood pulp into white paper?

A
\(\mathrm{H}_2 \mathrm{O}_2\)
B
\(\mathrm{Cl}_2\)
C
\(\mathrm{Mn}(\mathrm{OH})_2\)
D
NaOCl
Open complete paper
9
2020 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2020 16TH OCTOBER MORNING SHIFT

What is the oxidation number of As in H\(_3\)AsO\(_3\) ?

A
+ 4
B
+ 3
C
\(-\) 3
D
+ 2
Open complete paper
10
2020 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2020 19TH OCTOBER EVENING SHIFT

What is the oxidation number of Mn in MnO$^{2-}_4$ ion?

A
+6
B
+8
C
$-$8
D
$-$6
Open complete paper
11
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 20TH SEPTEMBER EVENING SHIFT

What is the value of '\(\mathrm{x}\)' in order to balance the following redox reaction by ion electron method? \(\quad \mathrm{x} \mathrm{H}_2 \mathrm{O}_2+\mathrm{ClO}_4 \rightarrow \mathrm{xO}_2+\mathrm{ClO}_2+2 \mathrm{H}_2 \mathrm{O}\)

A
3
B
4
C
1
D
2
Open complete paper
12
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 20TH SEPTEMBER MORNING SHIFT

Identify reductant in following reaction.

$$\mathrm{{C_2}O_4^{2 - } + MnO_4^ - + {H^ + } \longrightarrow M{n^{2 + }} + C{O_2} + {H_2}O}$$

A
\({H^ + }\)
B
\({H_2}O\)
C
\({C_2}O_4^{2 - }\)
D
\(MnO_4^ -\)
Open complete paper
13
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 21TH SEPTEMBER MORNING SHIFT

Oxidation state of Cr in potassium dichromate is

A
+7
B
+6
C
+1
D
+5
Open complete paper
14
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 22TH SEPTEMBER EVENING SHIFT

Identify reducing agent in following reaction

$$\mathrm{H}_2 \mathrm{O}_{2(\mathrm{ag})}+\mathrm{ClO}_{4(\mathrm{aq})}^{-} \rightarrow \mathrm{ClO}_{2(\mathrm{aq})}^{-}+\mathrm{O}_{2(\mathrm{g})}$$

A
\(\mathrm{ClO}_{2(a q)}^{-}\)
B
\(\mathrm{H}_2 \mathrm{O}_{2 \text { (aq) }}\)
C
\(\mathrm{ClO}_{4(a q)}^{-}\)
D
\(\mathrm{O}_{2(\mathrm{g})}\)
Open complete paper
15
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 22TH SEPTEMBER MORNING SHIFT

Identify reductant in following reaction.

$$\mathrm{H}_2 \mathrm{~S}+\mathrm{NO}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{NO}+\mathrm{S}$$

A
\(\mathrm{H}_2 \mathrm{~S}\)
B
\(\mathrm{NO}_2\)
C
\(\mathrm{NO}\)
D
\(\mathrm{S}\)
Open complete paper
16
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 24TH SEPTEMBER EVENING SHIFT

Which among the following reactions exhibits the reducing property of ozone?

A
\(\mathrm{PbS}_{(\mathrm{s})}+4 \mathrm{O}_{3(\mathrm{~g})} \rightarrow \mathrm{PbSO}_{4(\mathrm{~s})}+4 \mathrm{O}_{2(\mathrm{~g})}\)
B
\(\mathrm{BaO}_{2 \text { (g) }}+\mathrm{O}_{3(\mathrm{~g})} \rightarrow \mathrm{BaO}_{(\mathrm{s})}+2 \mathrm{O}_{2 \text { (g) }}\)
C
\(\mathrm{NO}_{(\mathrm{g})}+\mathrm{O}_{3(\mathrm{~g})} \rightarrow \mathrm{NO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})}\)
D
\(2 \mathrm{KI}_{(\mathrm{qq})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{l})}+\mathrm{O}_{3(\mathrm{~g})} \rightarrow 2 \mathrm{KOH}_{(\mathrm{aq})}+\mathrm{I}_{2(\mathrm{~g})}+\mathrm{O}_2(\mathrm{~g})\)
Open complete paper
17
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 24TH SEPTEMBER EVENING SHIFT

Which of following is NOT a redox reaction?

A
\(\mathrm{CH}_3 \mathrm{CHO}+\mathrm{Cu}(\mathrm{OH})_2 \longrightarrow \mathrm{CH}_3 \mathrm{COOH}+\mathrm{Cu}_2 \mathrm{O}\)
B
\(\mathrm{SnCl}_4+\mathrm{FeCl}_2 \longrightarrow \mathrm{FeCl}_3+\mathrm{SnCl}_2\)
C
\(\mathrm{H}_2 \mathrm{SO}_4+\mathrm{Ca}(\mathrm{OH})_2 \longrightarrow \mathrm{CaSO}_4+\mathrm{H}_2 \mathrm{O}\)
D
\(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}+[\mathrm{O}] \longrightarrow \mathrm{CH}_3 \mathrm{CHO}+\mathrm{H}_2 \mathrm{O}\)
Open complete paper
18
2021 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2021 24TH SEPTEMBER MORNING SHIFT

What is the change in oxidation number of nitrogen in following conversion?

$$\mathrm{NO}_3^{-} \longrightarrow \mathrm{NO}_2$$

A
+4 to +5
B
+3 to +5
C
+5 to +4
D
\(-\)3 to +5
Open complete paper
19
2022 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2022 11TH AUGUST EVENING SHIFT

Which one of the following conversions does NOT involve either oxidation or reduction?

A
\(\mathrm{Na} \rightarrow \mathrm{Na}^{+}\)
B
\(\mathrm{VO}_2^{+} \rightarrow \mathrm{V}_2 \mathrm{O}_3\)
C
\(\mathrm{Zn}^{2+} \rightarrow \mathrm{Zn}\)
D
\(\mathrm{CrO}_4^{2-} \rightarrow \mathrm{Cr}_2 \mathrm{O}_7^{2-}\)
Open complete paper
20
2023 · Chemistry · Physical Chemistry · Redox Reactions
MHT CET 2023 10TH MAY EVENING SHIFT

Identify the elements undergoing reduction and oxidation respectively in the following redox reaction.

$$3 \mathrm{H}_3 \mathrm{AsO}_{3(\mathrm{aq})}+\mathrm{BrO}_{3(\mathrm{aq})}^{-} \rightarrow \mathrm{Br}_{(\mathrm{aq})}^{-}+3 \mathrm{H}_3 \mathrm{AsO}_4$$

A
As and \(\mathrm{O}\)
B
\(\mathrm{Br}\) and \(\mathrm{As}\)
C
\(\mathrm{As}\) and \(\mathrm{Br}\)
D
\(\mathrm{Br}\) and \(\mathrm{O}\)
Open complete paper

Showing 20 of 65 questions