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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
4Years
11Questions
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 11 100%

Question type distribution

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

Multiple Choices 11 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
11 Qs

Most asked topics

Top topics across the included previous year papers.

Organic Chemistry
11 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Isomerism
11 Qs

Paper coverage

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

COMEDK 2025 EVENING SHIFT
1 Qs
COMEDK 2024 MORNING SHIFT
3 Qs
COMEDK 2024 AFTERNOON SHIFT
1 Qs
COMEDK 2023 EVENING SHIFT
2 Qs
COMEDK 2023 Morning Shift
1 Qs
COMEDK 2020
3 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
COMEDK 2025 EVENING SHIFT20251View paper
COMEDK 2024 AFTERNOON SHIFT20241View paper
COMEDK 2024 MORNING SHIFT20243View paper
COMEDK 2023 EVENING SHIFT20232View paper
COMEDK 2023 Morning Shift20231View paper
COMEDK 202020203View paper

All Isomerism previous year questions

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

1
2020 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2020

Geometrical isomerism is shown by

A
COMEDK 2020 Chemistry - Isomerism Question 11 English Option 1
B
COMEDK 2020 Chemistry - Isomerism Question 11 English Option 2
C
COMEDK 2020 Chemistry - Isomerism Question 11 English Option 3
D
None of these
Open complete paper
2
2020 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2020

Which one of the following shows functional isomerism?

A
\(\mathrm{CH_2Cl_2}\)
B
\(\mathrm{C_2H_5OH}\)
C
\(\mathrm{C_3H_6}\)
D
\(\mathrm{C_2H_4}\)
Open complete paper
3
2020 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2020

How many chiral carbon atoms are present in 2, 3, 4-trichloropentane ?

A
3
B
2
C
1
D
4
Open complete paper
4
2023 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2023 EVENING SHIFT

Structures of 3 Monosaccharides are given below. Two of them are Anomers. Identify the two Anomers.

COMEDK 2023 Evening Shift Chemistry - Isomerism Question 7 English

A
II is the anomer of both I and II
B
I and II are Anomers.
C
II and III are Anomers.
D
I and III are Anomers
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5
2023 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2023 EVENING SHIFT

Which of the following will show geometrical isomerism?

A
2-methylbut-2-ene
B
2-methylpropene
C
Cyclohexene
D
1,2-dibromopropene
Open complete paper
6
2024 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2024 AFTERNOON SHIFT

Which of the following compounds will show geometrical isomerism?

A
1, 2-dibromopropene
B
2-methylbut-2-ene
C
2-methylpropene
D
1, 1-diphenylethylene
Open complete paper
7
2024 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2024 MORNING SHIFT

What is the number of mono-chloro derivatives of Ethyl cyclohexane possible?

A
5
B
4
C
6
D
3
Open complete paper
8
2024 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2024 MORNING SHIFT

A statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following options.

Assertion: The Eclipsed and the Staggered conformations of Ethane continuously flip from one form to the other.

Reason: The torsional barrier between the Conformers of Ethane has a high value of about \(50 \mathrm{~kJ} / \mathrm{mol}\) and this restricts free rotation around \(\mathrm{C}-\mathrm{C}\) bond.

A
Assertion is incorrect but Reason is correct statement.
B
Both Assertion and Reason are incorrect statements.
C
Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
D
Assertion is correct but Reason is incorrect statement.
Open complete paper
9
2024 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2024 MORNING SHIFT

Which one of the following compounds shows Geometrical isomerism?

A
2-Methylhex-2-ene
B
4-Methylhex-2-ene
C
2-Methylhex-1-ene
D
4-Methylhex-1-ene
Open complete paper
10
2025 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2025 EVENING SHIFT
Choose the incorrect statement from the following.
A
The energy difference between the staggered and eclipsed conformation of ethane is $12.55 \mathrm{~kJ} / \mathrm{mol}$
B
Staggered conformation of ethane is more stable than the eclipsed conformation.
C
The distance between non-bonded H -atoms of ethane in eclipsed conformation is $2.29\($\mathop A\limits^o\)
D
A $90^{\circ}$ rotation converts staggered conformation of ethane into eclipsed conformation.
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11
2023 · Chemistry · Organic Chemistry · Isomerism
COMEDK 2023 Morning Shift

COMEDK 2023 Morning Shift Chemistry - Isomerism Question 9 English

I and II are

A
identical
B
a pair of conformers
C
a pair of geometrical isomers
D
a pair of optical isomers
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