Most Repeated Questions in IAT (IISER)

This page ranks repeated IAT (IISER) question patterns by PYQ frequency across chapters and topics. It highlights where questions appear most often, without claiming the exact same question repeats every year.

360 PYQs analyzed110 topics ranked4 subjects

Important questions Chapter weightage Chapter-wise practice Create test

360

PYQs Analyzed

IAT (IISER) database

110

Most Repeated Topics

Ranked by PYQ count

360

Last 5 Years

2022-2026

360

Last 10 Years

2017-2026

Top Repeated Chapters and Topics

Principles of Inheritance and Variation

#2 / Mathematics

Definite Integration

Chemical Bonding and Molecular Structure

Heat and Thermodynamics

Coordination Compounds

#7 / Mathematics

Application of Derivatives

#8 / Mathematics

Matrices and Determinants

Molecular Basis of Inheritance

#10 / Chemistry

Atomic Structure

Atoms and Nuclei

Biotechnology: Principles and Processes

Dual Nature of Radiation

#14 / Mathematics

Limits, Continuity and Differentiability

#15 / Mathematics

Simple Harmonic Motion

#18 / Mathematics

Complex Numbers

#19 / Mathematics

Differential Equations

#20 / Mathematics

#21 / Chemistry

General Organic Chemistry

#22 / Chemistry

Haloalkanes and Haloarenes

Human Health and Diseases

#24 / Chemistry

Cell Cycle and Cell Division

#28 / Chemistry

Chemical Kinetics

#29 / Chemistry

Compounds Containing Nitrogen

Current Electricity

#31 / Chemistry

Electrochemistry

Electromagnetic Induction

#33 / Chemistry

#34 / Chemistry

Liquid Solution

Locomotion and Movement

Photosynthesis in Higher Plants

Rotational Motion

#38 / Mathematics

Sequences and Series

#39 / Mathematics

Sets and Relations

#40 / Chemistry

Units & Measurement and Dimensions

#42 / Mathematics

Work, Energy and Power

Anatomy of Flowering Plants

#46 / Mathematics

Binomial Theorem

Cell - The Unit of Life

#49 / Mathematics

Subject-wise Repeated Areas

Biology

90 PYQs

#1 Principles of Inheritance and Variation(12)#2 Molecular Basis of Inheritance(7)#3 Biotechnology: Principles and Processes(6)#4 Human Health and Diseases(5)#5 Animal Kingdom(4)#6 Biomolecules(4)#7 Cell Cycle and Cell Division(4)#8 Locomotion and Movement(4)

Chemistry

90 PYQs

#1 Chemical Bonding and Molecular Structure(9)#2 Coordination Compounds(8)#3 Atomic Structure(6)#4 General Organic Chemistry(5)#5 Haloalkanes and Haloarenes(5)#6 Isomerism(5)#7 Chemical Kinetics(4)#8 Compounds Containing Nitrogen(4)

Mathematics

90 PYQs

#1 Definite Integration(10)#2 Application of Derivatives(7)#3 Matrices and Determinants(7)#4 Limits, Continuity and Differentiability(6)#5 Probability(6)#6 Complex Numbers(5)#7 Differential Equations(5)#8 Functions(5)

Physics

90 PYQs

#1 Electrostatics(9)#2 Heat and Thermodynamics(9)#3 Atoms and Nuclei(6)#4 Dual Nature of Radiation(6)#5 Ray Optics(6)#6 Simple Harmonic Motion(6)#7 Current Electricity(4)#8 Electromagnetic Induction(4)

Practice by Subject

Biology PYQs90 questions Chemistry PYQs90 questions Mathematics PYQs90 questions Physics PYQs90 questions