IAT (IISER) Chemistry Chapter Weightage
Analyze 90 IAT (IISER) Chemistry PYQs by chapter, topic group and recent year trend. Use the ranking to prioritize high-frequency chapters before practicing.
Chemistry29 chapters/topics90 PYQs
90
Total PYQs
IAT (IISER) Chemistry
29
Chapters Ranked
Chapter/topic pages
2026-2026
Year Range
Based on paper metadata
90
Last 5 Years
2022-2026
Highest share
Chemical Bonding and Molecular Structure
10% of Chemistry PYQs
Top 5 chapter share
36.7%
How much of this subject is concentrated in the first five chapters.
Fastest rising
Stable
Trend data is limited for this subject.
Recent Year Trend
2026Latest year
202690 max PYQs/year2026
Chapter Group Share
90PYQs
Organic Chemistry34.4%
Physical Chemistry34.4%
Inorganic Chemistry31.1%
Top Chapter Share
#1 Chemical Bonding and Molecular Structure9 PYQs13.33%Stable
#2 Coordination Compounds8 PYQs13.33%Stable
#3 Atomic Structure6 PYQs6.67%Stable
#4 General Organic Chemistry5 PYQs0%-100% falling
#5 Haloalkanes and Haloarenes5 PYQs6.67%Stable
#6 Isomerism5 PYQs6.67%Stable
#7 Chemical Kinetics4 PYQs6.67%Stable
#8 Compounds Containing Nitrogen4 PYQs6.67%Stable
#9 Electrochemistry4 PYQs0%-100% falling
#10 Hydrocarbons4 PYQs0%-100% falling
Chemistry Weightage Map
#1
Chemical Bonding and Molecular Structure
9 PYQs13.33%
#2
Coordination Compounds
8 PYQs13.33%
#3
Atomic Structure
6 PYQs6.67%
#4
General Organic Chemistry
5 PYQs0%
#5
Haloalkanes and Haloarenes
5 PYQs6.67%
#6
Isomerism
5 PYQs6.67%
#7
Chemical Kinetics
4 PYQs6.67%
#8
Compounds Containing Nitrogen
4 PYQs6.67%
#9
Electrochemistry
4 PYQs0%
#10
Hydrocarbons
4 PYQs0%
#11
Liquid Solution
4 PYQs6.67%
#12
Thermodynamics
4 PYQs6.67%
#13
p-Block Elements
3 PYQs0%
#14
Periodic Table and Periodicity
3 PYQs0%
#15
States of Matter
3 PYQs0%
#16
Alcohol, Phenols and Ethers
2 PYQs0%
Momentum Watch
Most Repeated Chemistry Chapters
#1
Chemical Bonding and Molecular Structure
#2
Coordination Compounds
#3
Atomic Structure
#4
General Organic Chemistry
#5
Haloalkanes and Haloarenes
#6
Isomerism
#7
Chemical Kinetics
#8
Compounds Containing Nitrogen
#9
Electrochemistry
#10
Hydrocarbons
#11
Liquid Solution
#12
Thermodynamics
#13
p-Block Elements
#14
Periodic Table and Periodicity
#15
States of Matter
#16
Alcohol, Phenols and Ethers
#17
Aldehyde and Ketone
#18
Biomolecules
#19
d and f Block Elements
#20
Metallurgy
#21
Carboxylic Acids and Its Derivatives
#22
Chemical Equilibrium
#23
Hydrogen and It's Compounds
#24
Ionic Equilibrium
#25
Practical Organic Chemistry
#26
Redox Reactions
#27
Solid State
#28
Some Basic Concepts of Chemistry
#29
Surface Chemistry