JEE Main 2027 Chemistry Syllabus (Expected)

Unit-wise expected Chemistry syllabus for JEE Main 2027, projected from the JEE Main 2026 / latest official syllabus pattern. Each unit below lists its unit number, unit name and the topics it covers.

JEE Main 2027 syllabus has not been officially released by NTA yet. This is the expected syllabus based on the JEE Main 2026 pattern. Please verify against the official NTA notification once released.

Unit-wise Chemistry Syllabus

Unit No.	Unit Name	Syllabus
1	Some Basic Concepts in Chemistry	Nature of matter, Dalton's atomic theory, atoms, molecules, elements and compounds; laws of chemical combination; atomic and molecular mass, the mole concept, molar mass, percentage composition, empirical and molecular formulae, and stoichiometry.
2	Atomic Structure	Electromagnetic radiation and the photoelectric effect; the hydrogen spectrum and Bohr's model with its limitations; the dual nature of matter, de Broglie's relation and Heisenberg's uncertainty principle; the quantum mechanical model of the atom, quantum numbers, orbital shapes, and rules for filling electrons (Aufbau, Pauli, Hund) with resulting electronic configurations.
3	Chemical Bonding and Molecular Structure	Ionic and covalent bond formation; factors affecting ionic bonds and lattice enthalpy; electronegativity, Fajan's rule, dipole moment and VSEPR theory; valence bond theory and hybridization; molecular orbital theory, bond order, bond length and bond energy; metallic and hydrogen bonding.
4	Chemical Thermodynamics	System, surroundings and state functions; the first law of thermodynamics covering work, heat, internal energy, enthalpy and Hess's law, along with various enthalpies; the second law, entropy and Gibbs energy as criteria for spontaneity, and the relation between standard Gibbs energy and the equilibrium constant.
5	Solutions	Ways of expressing concentration (molality, molarity, mole fraction, percentage); vapour pressure and Raoult's law for ideal and non-ideal solutions; colligative properties such as vapour pressure lowering, freezing point depression, boiling point elevation and osmotic pressure, and using them to find molar mass, including abnormal values and the van't Hoff factor.
6	Equilibrium	Dynamic equilibrium in physical processes (solid-liquid, liquid-gas, solid-gas) and Henry's law; the law of chemical equilibrium, Kp and Kc, and factors affecting equilibrium, including Le Chatelier's principle; ionic equilibrium covering acid-base theories, ionization constants, pH, common ion effect, salt hydrolysis, solubility product and buffer solutions.
7	Redox Reactions and Electrochemistry	Oxidation and reduction concepts, oxidation number rules and balancing redox reactions; electrolytic and metallic conduction, molar conductivity and Kohlrausch's law; galvanic and electrolytic cells, electrode potentials, the Nernst equation, the link between cell potential and Gibbs energy, and practical cells such as the dry cell, lead accumulator and fuel cells.
8	Chemical Kinetics	Rate of reaction and the factors affecting it; order and molecularity, rate law and rate constant; zero and first order reactions and their half-lives; the effect of temperature via Arrhenius theory and activation energy; collision theory of bimolecular gas reactions.
9	Classification of Elements and Periodicity in Properties	The modern periodic law and periodic table, s, p, d and f block elements, and periodic trends in atomic/ionic radii, ionization enthalpy, electron gain enthalpy, valence, oxidation states and reactivity.
10	p-Block Elements	Electronic configuration and general trends across Groups 13 to 18, including the distinctive behaviour of the first element in each group.
11	d- and f-Block Elements	Transition elements' configuration, occurrence and trends in physical properties, ionization enthalpy, oxidation states, radii, colour, catalysis, magnetism, complex and alloy formation, plus preparation and uses of K2Cr2O7 and KMnO4; lanthanoid and actinoid configurations, oxidation states and lanthanoid contraction.
12	Coordination Compounds	Werner's theory, ligands, coordination number, denticity and chelation; IUPAC nomenclature and isomerism; valence bond and crystal field theory approaches to bonding, colour and magnetism; applications in qualitative analysis, metal extraction and biology.
13	Purification and Characterisation of Organic Compounds	Purification techniques such as crystallization, sublimation, distillation, extraction and chromatography; qualitative detection of nitrogen, sulphur, phosphorus and halogens; principles of quantitative estimation and empirical/molecular formula calculations.
14	Some Basic Principles of Organic Chemistry	Tetravalency of carbon and hybridization; classification and nomenclature of organic compounds; structural and stereoisomerism; homolytic and heterolytic bond fission, free radicals, carbocations and carbanions; inductive, electromeric, resonance and hyperconjugation effects; substitution, addition, elimination and rearrangement reactions.
15	Hydrocarbons	Classification, isomerism, nomenclature, preparation and reactions of alkanes (including conformations and halogenation mechanism), alkenes (geometrical isomerism, electrophilic addition, ozonolysis, polymerization), alkynes, and aromatic hydrocarbons (structure, aromaticity, electrophilic substitution, Friedel-Crafts reactions).
16	Organic Compounds Containing Halogens	Preparation, properties, nature of the C-X bond, substitution mechanisms, and uses/environmental effects of compounds such as chloroform, iodoform, freons and DDT.
17	Organic Compounds Containing Oxygen	Alcohols, phenols and ethers — structure, dehydration and acidic behaviour; aldehydes and ketones — nucleophilic addition reactions, Grignard reagent, oxidation/reduction, aldol condensation, Cannizzaro and haloform reactions; carboxylic acids and factors affecting acidic strength.
18	Organic Compounds Containing Nitrogen	Amines — nomenclature, classification, structure, basicity and identification of primary/secondary/tertiary types; diazonium salts and their role in synthetic organic chemistry.
19	Biomolecules	Carbohydrates (aldoses, ketoses, and common mono/oligosaccharides); proteins (amino acids, peptide bonds, structural levels and denaturation, enzymes); vitamins; nucleic acids (DNA and RNA structure and function); a general introduction to hormones.
20	Principles Related to Practical Chemistry	Detection of extra elements and functional groups in organic compounds; preparation of select inorganic and organic compounds; titrimetric exercises with acids, bases and indicators; qualitative salt analysis for common cations and anions; and the chemistry behind standard experiments such as enthalpy of solution/neutralization, sol preparation, and reaction kinetics of iodide with hydrogen peroxide.