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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.

3Papers
3Years
4Questions
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 4 100%

Question type distribution

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

Multiple Choices 4 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
4 Qs

Most asked topics

Top topics across the included previous year papers.

Organic Chemistry
4 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Isomerism
4 Qs

Paper coverage

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

IAT IISER 2025
1 Qs
IAT IISER 2024
2 Qs
IAT IISER 2023
1 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
IAT IISER 202520251View paper
IAT IISER 202420242View paper
IAT IISER 202320231View paper

All Isomerism previous year questions

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

1
2023 · Chemistry · Organic Chemistry · Isomerism
IAT IISER 2023

$$\text { Which amongst the following are chiral compounds? }$$

IAT (IISER) 2023 Chemistry - Isomerism Question 3 English
A
II and IV
B
I and IV
C
II and III
D
I and II
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2
2024 · Chemistry · Organic Chemistry · Isomerism
IAT IISER 2024

$$\text { What is the relationship between the structures depicted below? }$$

IAT (IISER) 2024 Chemistry - Isomerism Question 4 English
A
Conformational isomers
B
Structural isomers
C
Enantiomers
D
Positional isomers
Open complete paper
3
2024 · Chemistry · Organic Chemistry · Isomerism
IAT IISER 2024

$$\text { What are the correct structural descriptions for } M \text { and } N \text { ? }$$

IAT (IISER) 2024 Chemistry - Isomerism Question 5 English
A
M is $\beta$-D-(+)-glucopyranose and N is $\beta$-D-(-)-fructofuranose
B
M is $\alpha-\mathrm{D}-(+)$-glucopyranose and N is $\beta$-D-(-)-fructofuranose
C
M is $\alpha-\mathrm{D}-(+)$-glucopyranose and N is $\alpha-\mathrm{D}-(-)$-fructofuranose
D
M is $\alpha-\mathrm{D}-(+)$-glucofuranose and N is $\beta$-D-(-)-fructopyranose
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4
2025 · Chemistry · Organic Chemistry · Isomerism
IAT IISER 2025

$$\text { Consider the following reaction scheme: }$$

IAT (IISER) 2025 Chemistry - Isomerism Question 2 English$$\text { Which among the following statements is correct? }$$

A

$\mathbf{P}$ shows geometrical isomerism and absorbs light of higher wavelength than that of $\mathbf{Q}$.

B

Both $\mathbf{P}$ and $\mathbf{Q}$ show geometrical isomerism and $\mathbf{P}$ absorbs light of higher wavelength than that of $\mathbf{Q}$.

C

Q shows geometrical isomerism and absorbs light of higher wavelength than that of $\mathbf{P}$.

D

$\mathbf{P}$ shows geometrical isomerism and absorbs light of lower wavelength than that of $\mathbf{Q}$.

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