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Previous year question hub

Isomerism - Organic Chemistry - Chemistry Previous Year Questions

Practice Isomerism - Organic Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

6Papers
6Years
9Questions
1Topics

Isomerism question pattern

Every graph below is calculated only from this selection.

Questions by year

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

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 9 100%

Question type distribution

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

Multiple Choices 9 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
9 Qs

Most asked topics

Top topics across the included previous year papers.

Organic Chemistry
9 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Isomerism
9 Qs

Paper coverage

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

KCET 2025
1 Qs
KCET 2024
1 Qs
KCET 2023
1 Qs
KCET 2020
2 Qs
KCET 2018
3 Qs
KCET 2017
1 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
KCET 202520251View paper
KCET 202420241View paper
KCET 202320231View paper
KCET 202020202View paper
KCET 201820183View paper
KCET 201720171View paper

All Isomerism previous year questions

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

1
2017 · Chemistry · Organic Chemistry · Isomerism
KCET 2017
Identify the correct statement in the following.
A
$n$-butane and isobutane are functional isomers
B
Propan-1-ol and propan-2ol are position isomers
C
Dimethyl ether and ethanol are chain isomers
D
Ethanoic acid and methyl methanoate are position isomers
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2
2018 · Chemistry · Organic Chemistry · Isomerism
KCET 2018
Identify the following compound which exhibits geometrical isomerism
A
but-2-ene
B
but-1-ene
C
butane
D
isobutane
Open complete paper
3
2018 · Chemistry · Organic Chemistry · Isomerism
KCET 2018
The two forms of D-glucopyranose are called
A
diastereomers
B
anomers
C
epimers
D
enantiomers
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4
2018 · Chemistry · Organic Chemistry · Isomerism
KCET 2018
$\left[\mathrm{Fe}\left(\mathrm{NO}_2\right)_3 \mathrm{Cl}_3\right]$ and $\left[\mathrm{Fe}(\mathrm{O}-\mathrm{NO})_3 \mathrm{Cl}_3\right]$ shows
A
linkage isomerism
B
geometrical isomerism
C
optical isomerism
D
hydrate isomerism
Open complete paper
5
2020 · Chemistry · Organic Chemistry · Isomerism
KCET 2020

In the reaction,

KCET 2020 Chemistry - Isomerism Question 8 English

The number of possible isomers for the organic compound X is

A
4
B
5
C
3
D
2
Open complete paper
6
2020 · Chemistry · Organic Chemistry · Isomerism
KCET 2020

Which of the following is not a pair of functional isomers?

A
\(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OC}_2 \mathrm{H}_5\) and \(\mathrm{C}_3 \mathrm{H}_7\mathrm{OCH}_3\)
B
\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}\) and \(\mathrm{CH}_3 \mathrm{OCH}_3\)
C
\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{NO}_2\) and \(\mathrm{H}_2 \mathrm{NCH}_2 \mathrm{COOH}\)
D
\(\mathrm{CH}_3 \mathrm{COOH}\) and \(\mathrm{HCOOCH}_3\)
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7
2023 · Chemistry · Organic Chemistry · Isomerism
KCET 2023

A pair of compounds having the same boiling points are

A
cis but-2-ene and trans but-2-ene
B
n-hexane and neo-hexane
C
benzene and naphthalene
D
\((+)\) butan-2-ol and \((-)\) butan-2-ol
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8
2024 · Chemistry · Organic Chemistry · Isomerism
KCET 2024

Propanone and propanal are

A
position isomers
B
functional isomers
C
chain isomers
D
geometrical isomers
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9
2025 · Chemistry · Organic Chemistry · Isomerism
KCET 2025

$$\text { Among the following, identify the compound that is not an isomer of hexane }$$

A
KCET 2025 Chemistry - Isomerism Question 2 English Option 1
B
KCET 2025 Chemistry - Isomerism Question 2 English Option 2
C
KCET 2025 Chemistry - Isomerism Question 2 English Option 3
D
KCET 2025 Chemistry - Isomerism Question 2 English Option 4
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