IISER Aptitude Test 2025 Chemistry Syllabus

bIISER Entrance Exam 2025 will consist of 15 questions from the IAT 2025 Chemistry syllabus. Candidates preparing for the IISER exam 2025 must go to the Chemistry syllabus specified by the exam officials. Read this Shiksha article to learn about the IISER entrance exam 2025 chemistry syllabus of class 11 and 12 NCERT books. Also, check out the weightage of Chemistry questions asked in the examination.

IISER Entrance Exam 2025 Chemistry Syllabus

IISER Entrance Exam 2205 Chemistry syllabus stipulates the chapters from which the exam officials will test the candidate's domain knowledge in the IAT 2025 examination. Interested applicants who are inclined towards the life sciences, the Chemistry section of the IAT 2025 assesses a broad understanding of fundamental biological concepts. IAT 2025 Chemistry Syllabus summarises the important topic of Class 11 and 12 NCERT Books.

Also Read: IISER 2025 New Changes Introduced: Check for Newly Added Courses, Eligibility, Seat Intake Details 

IISER Entrance Exam 2025 will be conducted on May 25, 2025, at various exam centres across the nation. Interested applicants will be able to fill out the IAT 2025 application form from March 3, 2025 onwards. Candidates are advised to check out the IISER 2025 eligibility criteria meticulously before applying to not lose their candidature at any stage of the admission process. The IISER 2025 Chemistry syllabus encompasses a broad range of topics, from basic concepts like atomic structure and stoichiometry to more advanced areas like organic reaction mechanisms, spectroscopy, and thermodynamics.

IISER Aptitude Test Chemistry Syllabus 2025

For better preparation for the IISER exam, the candidate must review the complete IISER 2025 syllabus as the questions asked will test the candidate's analytic ability. Candidates can find out the detailed IAT Chemistry syllabus 2025 here in this article. A strong grasp of these topics, typically covered in the Class 11 and 12 NCERT Chemistry curriculum, is essential for success in this section of the IAT.

IISER Chemistry Syllabus 2025: Class 11

Check out the IAT 2025 Chemistry syllabus of class 11 NCERT of Chemistry domain from here:

Some Basic Concepts of Chemistry: Matter and its nature, Dalton's atomic theory: Concept of atom, molecule, element, and compound, Laws of chemical combination, Atomic and molecular masses, mole concept, molar mass, percentage composition, empirical and molecular formulae, Chemical equations, and stoichiometry.
Structure of the Atom: Discovery of Sub-atomic Particles, Atomic Models, Developments Leading to the Bohr’s Model of Atom, Bohr’s Model for Hydrogen Atom, Towards Quantum, Mechanical Model of the Atom, Quantum Mechanical Model of Atom
Classification of Elements and Periodicity in Properties: Genesis of Periodic Classification, Modern Periodic Law and the Present Form of the Periodic Table, Electronic Configurations of
Elements and the Periodic Table, Electronic Configurations and Types of Elements: s-, p-, d-, f- Blocks, Periodic Trends in Properties of Elements
Chemical Bonding and Molecular Structure: Kössel-Lewis Approach to Chemical Bonding, Ionic or Electrovalent Bond, Bond Parameters, The Valence Shell Electron Pair Repulsion (VSEPR) Theory, Valence Bond Theory, Hybridisation, Molecular Orbital Theory, Bonding in Some Homonuclear Diatomic Molecules, Hydrogen Bonding
The d- & f-block elements: Position in the Periodic Table, Electronic Configurations of the dBlock Elements, General Properties of the Transition Elements (d-Block), Some Important Compounds of Transition Elements, The Lanthanoids, The Actinoids, Applications of d- and fBlock Elements.
Coordination compounds: Werner's Theory of Coordination Compounds, Definitions of Some Important Terms Pertaining to Coordination Compounds, Nomenclature of Coordination Compounds, Isomerism in Coordination Compounds, Bonding in Coordination Compounds, Bonding in Metal Carbonyls, Importance and Applications of Coordination Compounds
Thermodynamics: Thermodynamic Terms, Measurement of ΔU and ΔH, Calorimetry, Enthalpy Change, ΔH of a Reaction – Reaction Enthalpy, Enthalpies for Different Types of
Reactions, Spontaneity, Gibbs Energy Change and Equilibrium
Equilibrium: Equilibrium in Physical Processes, Equilibrium in Chemical Processes – Dynamic Equilibrium, Law of Chemical Equilibrium and Equilibrium Constant, Homogeneous Equilibria,
Heterogeneous Equilibria, Applications of Equilibrium Constants, Relationship between Equilibrium Constant K, Reaction Quotient Q and Gibbs Energy G, Factors Affecting Equilibria, Ionic Equilibrium in Solution, Acids, Bases and Salts, Ionization of Acids and Bases, Buffer Solutions, Solubility Equilibria of Sparingly Soluble Salts.
Redox Reactions: Classical Idea of Redox Reactions-Oxidation and Reduction Reactions, Redox Reactions in Terms of Electron Transfer Reactions, Oxidation Number, Redox Reactions and Electrode Processes.

Also Read: IISER Biology Syllabus 2025: Check Class 11 and Class 12 NCERT Biology Syllabus Here 

IISER Chemistry Syllabus 2025: Class 12

Check out the IAT 2025 Chemistry syllabus of class 11 NCERT of Chemistry domain from here:

Solutions: Types of Solutions, Expressing Concentration of Solutions, Solubility, Vapour Pressure of Liquid Solutions, Ideal and Non-ideal Solutions, Colligative Properties and
Determination of Molar Mass, Abnormal Molar Masses

Electrochemistry: Electrochemical Cells, Galvanic Cells, Nernst Equation, Conductance of Electrolytic Solutions, Electrolytic Cells and Electrolysis, Batteries, Fuel Cells, Corrosion
Chemical Kinetics: Rate of a Chemical Reaction, Factors Influencing Rate of a Reaction, Integrated Rate Equations, Temperature Dependence of the Rate of a Reaction, Collision Theory of Chemical Reactions.

Organic Chemistry- Some Basic Principles and Techniques: General Introduction, Tetravalence of Carbon: Shapes of Organic Compounds, Structural Representations of Organic Compounds, Classification of Organic Compounds, Nomenclature of Organic Compounds, Isomerism, Fundamental Concepts in Organic Reaction Mechanism, Methods of Purification of Organic Compounds, Qualitative Analysis of Organic Compounds, Quantitative Analysis
Hydrocarbons: Classification, Alkanes, Alkenes, Alkynes, Aromatic Hydrocarbon, Carcinogenicity and Toxicity
Haloalkanes and haloarenes: Classification, Nomenclature, Nature of C–X Bond, Methods of Preparation of Haloalkanes, Preparation of Haloarenes, Physical Properties, Chemical Reactions, Polyhalogen Compounds
Alcohols, phenols, and ethers: Classification, Nomenclature, Structures of Functional Groups, Alcohols and Phenols, Some Commercially Important Alcohols, Ethers.

Aldehydes, ketones, and carboxylic acids: Nomenclature and Structure of Carbonyl Group, Preparation of Aldehydes and Ketones, Physical Properties, Chemical Reactions, Uses of Aldehydes and Ketones, Nomenclature and Structure of Carboxyl Group, Methods of Preparation of Carboxylic Acids, Physical Properties, Chemical Reactions, Uses of Carboxylic
Acids.
Organic compounds containing nitrogen: Structure of Amines, Classification, Nomenclature, Preparation of Amines, Physical Properties, Chemical Reactions, Method of Preparation of Diazonium Salts, Physical Properties, Chemical Reactions, Importance of Diazonium Salts in Synthesis of Aromatic Compounds
Biomolecules: Carbohydrates, Proteins, Enzymes, Vitamins, Nucleic Acids, Hormones

IISER Entrance Exam 2025: Subject Weightage

The IISER Entrance Exam Marking Scheme and subject weightage is as follows:

Marking scheme: Candidates will be awarded three marks for each correct answer. There will be negative marking of one mark for each incorrect answer.

Also Read: IISER Entrance Exam 2025 Pattern: Section-wise Paper Pattern, Marking Scheme 

Here we bring the list of top books for the IISER Aptitude Test Chemistry section.