Physical Chemistry Chapters for NEET 2026 with Weightage

Deputy Manager - Editorial

Updated on Dec 24, 2025 20:07 IST

Physical Chemistry forms an important and major part of the NEET 2026 syllabus. Medical aspirants preparing to appear for NEET must prepare for the Physical Chemistry chapters for NEET to get a good score in the Chemistry section, as well as the entire exam. In this article of Shiksha, we bring to you the important Physical Chemistry chapters.

NEET Physical Chemistry Syllabus 2026 is now available. Know all about the Physical Chemistry chapters in NEET and how to plan preparation based on the weightage and syllabus in the exam.

The NEET Chemistry syllabus is segregated into Physical Chemistry, Organic Chemistry and Inorganic Chemistry sections. The Physical Chemistry chapters for NEET constitute approximately 40 per cent weightage in the Chemistry subject questions. Hence, it is of utmost importance for students to give major attention and priority to the Physical Chemistry chapters of NEET. Those who are planning to take the NEET 2026 exam must prepare for Physical chemistry chapters for NEET as well so that they can get a good score in the exam.

According to the latest NEET syllabus 2026, there are no changes in the Chemistry chapters. NEET Physical Chemistry Syllabus contains Thermodynamics, Chemical Kinetics, Equilibrium, and Solutions. Candidates must prepare the NEET Physical Chemistry syllabus 2026 to ace the exam.

Also Read:NEET 2026 Syllabus PDF (OUT) Physics, Chemistry, Biology Syllabus

Table of contents

NEET Exam Pattern 2026
Physical Chemistry Chapters for NEET - Unit-wise Topics
Physical Chemistry Chapters Removed from NEET Syllabus
Physical Chemistry Chapters for NEET - Class-wise Weightage
Physical Chemistry for NEET - Chapter-wise Weightage
Physical Chemistry Chapters in NEET - Difficulty Level
Best Books for NEET Physical Chemistry
Preparation Tips for NEET Physical Chemistry Chapters

NEET Exam Pattern 2026

NEET is the only and most competitive undergraduate medical entrance exam. It tests candidates’ calibre in three subjects – Chemistry, Physics, and Biology. There are 45 questions related to Chemistry subject out of the total 180 questions. As per the NEET 2026 exam pattern, the NEET exam has 180 questions. The table shows the exam structure of NEET 2026.

Subject	Number of Questions	Marks
Physics	45	180
Chemistry	45	180
Botany	45	180
Zoology	45	180
Total	180	720

Also Read: NEET Chemistry Syllabus 2026 (OUT)

Physical Chemistry Chapters for NEET - Unit-wise Topics

The total Physical Chemistry chapters for NEET includes eight units in the Physical Chemistry syllabus for NEET. The detailed syllabus of this section is given below.

Unit I: 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.

Unit II: Atomic Structure

Nature of electromagnetic radiation, photoelectric effect; Spectrum of the hydrogen atom. Bohr model of a hydrogen atom - its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model; Dual nature of matter, de Broglie's relationship. Heisenberg uncertainty principle. Elementary ideas of quantum mechanics, quantum mechanics, the quantum mechanical model of the atom, and its important features. Concept of atomic orbitals as one-electron wave functions: Variation of Ψ and Ψ² with r for 1s and 2s orbitals: various quantum numbers (principal, angular momentum, and magnetic quantum numbers) and their significance; shapes of s, p, and d - orbitals, electron spin and spin quantum number: Rules for filling electrons in orbits - Aufbau principle. Pauli's exclusion principle and Hund's rule, electronic configuration of elements, extra stability of half-filled and completely filled orbitals.

Unit III: Chemical Bonding, Molecular Structure

Kossel-Lewis approach to chemical bond formation, the concept of ionic and covalent bonds.

Ionic Bonding: Formation of ionic bonds, factors affecting the formation of ionic bonds; calculation of lattice enthalpy.

Covalent Bonding: Concept of electronegativity. Fajan's rule, dipole moment: Valence Shell Electron Pair Repulsion (VSEPR) theory and shapes of simple molecules.
Quantum mechanical approach to covalent bonding: Valence bond theory - its important features. the concept of hybridization involving s, p, and d orbitals; Resonance.
Molecular orbital Theory - Its important features. LCAOs, types of molecular orbitals (bonding, antibonding), sigma and pi-bonds, molecular orbital electronic configurations of homonuclear diatomic molecules, the concept of bond order, bond length, and bond energy.
Elementary idea of metallic bonding. Hydrogen bonding and its applications.

Unit IV: Chemical Thermodynamics

Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties' state functions, types of processes.

The first law of thermodynamics - Concept of work, heat internal energy and enthalpy, heat capacity, molar heat capacity; Hess's law of constant heat summation; Enthalpies of bond dissociation, combustion' formation, atomization. sublimation. phase transition, hydration. ionization. and solution.

The second raw of thermodynamics - Spontaneity of processes: AS of the universe and AC of the system as criteria for spontaneity. Standard Gibbs energy change and equilibrium constant.

The following paragraphs bring the important topics from the NEET syllabus 2024 for Chemistry and their weightage.

Unit V: Solutions

Different methods for expressing the concentration of solution - molality, molarity, mole fraction. percentage (by volume and mass both), the vapour pressure of solutions and Raoult's law - Ideal and. non-ideal solutions, vapour pressure - composition, plots for ideal and non-ideal solutions: colligative properties of dilute solutions - a relative lowering of vapour pressure, depression of freezing point, the elevation of.boiling point and osmotic pressure; Determination of molecular mass using colligative properties; Abnormal value of molar mass, Van't Hoff Factor and its significance.

Unit VI: Equilibrium

Meaning of equilibrium, the concept of dynamic equilibrium.

Equilibria involving physical processes: Solid-liquid, liquid - gas and solid-gas equilibria, Henry's law. General characteristics of equilibrium involving physical processes.

Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (K_p and K_c) and their significance, the significance of ΔG and ΔG° in chemical equilibrium, factors affecting equilibrium concentration, pressure, temperature, the effect of catalyst; Le Chatelier's principle.

Ionic equilibrium: weak. and strong electrolytes, ionization of electrolytes, various concepts of acids and bases (Arrhenius and Bronsted - Lowry and Lewis) and their ionization, acid-base equilibria (including multistage ionization) and ionization constants, ionization of water. PH scale, common ion effect, hydrolysis of salts and PH of their solutions, the solubility of sparingly soluble salts and solubility products, buffer solutions.

Unit VII: Redox Reactions and Electrochemistry

Electronic concepts of oxidation-reduction, redox reactions, oxidation numbers, rules for assigning oxidation numbers, balancing of redox reactions.

Electrolytic and metallic conduction, conductance in electrolytic solutions, molar conductivities and their variation with concentration, Kohlrausch's law and its applications.

Electrochemical Cells - Electrolytic and Galvanic cells, different types of electrodes, electrode potentials including standard electrode potential, half-cell and cell reactions, emf of a Galvanic cell and its measurement: Nernst equation and its applications; Relationship between cell potential and Gibbs' energy change: Dry cell and lead accumulator; Fuel cells.

Unit VIII: Chemical Kinetics

Rate of a chemical reaction, factors affecting the rate of reactions: concentration, temperature, pressure, and catalyst; elementary and complex reactions, order and molecularity of reactions, rate law, rate constants and its units, differential and integral forms of zero and first-order reactions, their characteristics and half lives, the effect of temperature on the rate of reactions, Arrhenius theory, activation energy and its calculation, collision theory of bimolecular gaseous reactions (no derivation).

Physical Chemistry Chapters Removed from NEET Syllabus

The units or chapters have been removed from the Physical Chemistry chapters of the NEET syllabus.

Units	Chapters
Some Basic Concepts of Chemistry	General Introduction: Important and scope of chemistry.
Structure of Atom	Atomic number, isotopes and isobars, Concept of shells and subshells, dual nature of matter and light.
Environmental Chemistry	Environmental pollution: Air, water and soil pollution, chemical reactions in atmosphere, smogs, major atmospheric pollutants; acid rain ozone and its reactions, effects of depletion of ozone layer, greenhouse effect and global warming-pollution due to industrial wastes; green chemistry as an alternative tool for reducing pollution, strategy for control of environmental pollution.
Chemistry in Everyday Life	• Chemicals in medicines- analgesics, tranquillizers, antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamines. • Chemicals in food- preservatives, artificial sweetening agents, elementary idea of antioxidants. • Cleansing agents- soaps and detergents, cleansing action.
Surface Chemistry	Adsorption-physisorption and chemisorption; factors affecting adsorption of gases on solids, catalysis homogeneous and heterogeneous, activity and selectivity: enzyme catalysis; colloidal state: distinction between true solutions, colloids and suspensions; lyophilic, lyophobic multimolecular and macromolecular colloids; properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation; emulsions- types of emulsions.

Physical Chemistry Chapters for NEET - Class-wise Weightage

The following table mentions the weightage of Physical chemistry NEET syllabus for class 11th and 12th that will be included in Section A and B.

Section	Physical Chemistry Questions from Class 11	Physical Chemistry Questions from Class 12
Section A	5	6
Section B	2	3

Note: The above ratio of Class 11 and Class 12 questions in NEET Section A and Section B of Chemistry is based on last year. This year onwards, there will be a common section of Chemistry, instead of Section A and Section B.

Physical Chemistry for NEET - Chapter-wise Weightage

The table below enlists the topics from the Physical Chemistry chapters for NEET along with the tentative weightage in percentage.

Chemistry Chapters and Topics

Average No. of Questions from the Chapter

Weightage of the Chapter and Topic

Physical Chemistry

40%

Chemical Equilibrium

Reaction Quotient and its Applications

KC and KP for Homogeneous Reaction

Degree of dissociation and vapour density

Chemical Kinetics

Effect of Temperature, Arrhenius equation

Electrochemistry

Faradays Law of Electrolysis

Ionic Equilibrium

Acid-base Titration and Indicator

Mole Concept

Units, Atoms, Molecules, Atomic mass, Molecular mass, Gram atomic mass, Gram molecular mass, RAM, Average atomic mass

Limiting Reagent (LR)

Percentage composition and Molecular and Empirical formula

Solution Colligative Properties

Solutions of Gases in Liquids (Henry’s law)

Osmosis and osmotic pressure

Atomic Structure

Quantum Numbers and Electronic configuration

Bohr's Model (Calculation of Radius, velocity and energy)

Redox Reaction

Types of Redox reaction, Balancing of redox reactions, Oxidizing and Reducing agent

Thermodynamics

Thermodynamic functions and Thermodynamic processes

IInd Law of thermodynamics: Basics of entropy, Entropy calculation for different types of physical process of an ideal gas, chemical reaction

Calculation of ∆E, ∆H, w and θ in different types of physical processes

Note: The above table carries topic-wise weightages based on last year's NEET exam. Candidates may use it for reference by omitting the removed topics.

Physical Chemistry Chapters in NEET - Difficulty Level

As per last year’s NEET analysis, the difficulty level of the questions in Section A was easy to moderate, whereas that of Section B was easy. The table below shows the difficulty level of the Physical Chemistry chapters in the NEET for Class 11 and Class 12 syllabi for both sections.

Section A

The table brings the topic-wise number and Chemistry questions difficulty level of Section A.

Topics	Easy	Medium	Difficult	Total
Physical Chemistry Class 11	0	3	1	4
Physical Chemistry Class 12	3	3	2	7

Section B

This section was of easy to moderate difficulty level with a uniform distribution of questions.

Topics	Easy	Medium	Difficult	Total
Physical Chemistry Class 11	0	3	0	3
Physical Chemistry Class 12	1	1	1	3

Best Books for NEET Physical Chemistry

Some of the best Physical Chemistry books for NEET are as follows:

Wiley's Physical Chemistry for NEET by Vipul Mehta
Problems in Physical Chemistry for NEET with NCERT Exemplar by Narendra Awasthi
A Textbook of Physical Chemistry for NEET by Dr OP Tandon and Dr AS SIngh
Beat the NEET Physical Chemistry for NEET by Sailajananda Raychaudhuri

While preparing for NEET Chemistry 2026 syllabus, you must be very well prepared for every chapter of Physical chemistry so that you can score higher. You need to work on both strength and weekness in this section of chemistry. Another way is to consider the weightage so that students can decide which topic they should pick up on priority.

Preparation Tips for NEET Physical Chemistry Chapters

Let us take a look at some tips that will help you clear Physical chemistry questions:

Complete the syllabus: Carefully go through NEET Physical Chemistry syllabus and analyse the details and then, understand which is a more difficult topic for you in Physical chemistry. Once you have identified it, you should assign more time to that particular topic to prepare it.
Suitable study materials: Students should refer to study materials that specially cover Physical Chemistry chapters for NEET. Specific books for NEET Physical Chemistry are mentioned above. Before referring to other books, please ensure that you have read NCERT books and study materials.
Memorise formulae and Periodic Table: Since the Physical Chemistry has formulae and the periodic table, you have to memorise symbols and formulae. Candidates can use the visualisation technique like flashcards, posters, etc. You can also make short notes and formula sheets to memorise more efficiently.
Solve NEET Previous question papers: Solving NEET question papers will give ample exposure to candidates regarding the question types to expect. Aspirants are advised to cull out the Physical Chemistry question papers and solve those. After solving the previous year questions, check the solutions and answer keys. Along with the NEET previous year's questions, you should also solve the NCERT Exemplar questions to get an overview of question types.
Focus on the important NEET Physical Chemistry topics: Based on the previous years' NEET analysis, you must focus on the important NEET Physical Chemistry chapters, which are Mole Concept, Thermodynamics, Ionic Equilibrium, States of Matter, Solution, Chemical Kinetics, Electrochemistry and Solid State.

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Rupali Pruthi

Deputy Manager - Editorial

With MA in English, Rupali has more than 15 years of editorial experience. At Shiksha.com, a subsidiary of Info Edge (India) Limited, she creates content and make prep guides for students preparing for competitive e

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