NCERT Solutions for Class 11 Chemistry - Free PDF Download

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Class 11 Chemistry marks a significant shift from what you studied in middle school. Topics like Atomic Structure, Thermodynamics, Chemical Equilibrium, and Organic Chemistry Basics are introduced at a level that demands strong conceptual clarity — not just memorisation.

NCERT Solutions for Class 11 Chemistry are detailed, step-by-step answers to every question in the NCERT textbook, written according to CBSE marking guidelines. They help you:

• Understand exactly how to frame answers for maximum marks
• Identify the logic behind multi-step numerical problems
• Build the foundation you need for JEE Main, JEE Advanced, and NEET

The CBSE board frames question papers directly from NCERT textbooks. According to CBSE's official curriculum documents, students who thoroughly practise NCERT exercises consistently outperform those who rely solely on reference books.

These solutions are prepared by eSaral's Chemistry faculty — teachers with IIT Bombay backgrounds, including verified All India Ranks — so the approach mirrors what top-performing students actually use.

Also explore: NCERT Solutions for Class 11 Maths and NCERT Solutions for Class 11 Physics to cover your full PCM preparation.

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Chapter-Wise NCERT Solutions for Class 11 Chemistry (2026-27)

The following 9 chapters are part of the current NCERT Class 11 Chemistry syllabus for 2026-27 as updated by CBSE:

⚠️ Note on Deleted Chapters: The following chapters have been removed from the NCERT Class 11 Chemistry syllabus for 2023-24, 2024-25 and 2026-27: States of Matter, Hydrogen, The s-Block Elements, The p-Block Elements, and Environmental Chemistry. Do not include these in your board exam preparation.

NCERT Solutions Class 11 Chemistry Chapter Details 

Chapter 1:  Some Basic Concepts of Chemistry

This chapter explains to you the importance of chemistry, molecular mass, and atomic mass. Different fundamental theories and laws, such as Avogadro's Law, Dalton's Atomic Theory, and the Law of Conservation of Mass, are all briefly explained in this chapter. You can also get some problems based on determining the molecular weight of compounds, mass per cent, and concentration. In this chapter, you will clearly understand empirical and molecular formulas, molarity, molality, and the concept of the mole. Topics discussed in this chapter are: General Introduction: Importance and scope of chemistry.

Historical approach to particulate nature of matter, Dalton's atomic theory: the concept of atoms, elements, and molecules.Laws of chemical combination. Molecular and atomic masses. Molar mass and mole concept; percentage composition and empirical and molecular formula; chemical reactions, stoichiometry, and calculations based on stoichiometry; all these are explained in Chapter 1.

Chapter- 2 Structure of Atom

In chapter 2, you will be introduced to Thomson's atomic model, subatomic particles, Bohr's model, Rutherford's atomic model, and the quantum mechanical model of the atom. This chapter consists of problems related to the relationship between frequency and wavelength, the energy associated with electromagnetic radiation, and subatomic particles. You will get to know how to write electron configurations and transitions in different shells, which is very important for the exam. 

Topics covered in this chapter are: Discovery of electrons, protons, and neutrons; atomic number, isotopes, and isobars. Rutherford's model and limitations, Thomson's model and its limitations, Bohr's model and its limitations, the concept of shells and subshells, dual nature of light and matter, de Broglie's relationship, Heisenberg uncertainty principle, the concept of orbitals, quantum numbers, shapes of s, p, and d orbitals, rules of filling electrons in orbitals – Aufbau rules, Pauli exclusion principle and Hund's rule, electronic configuration of atoms, stability of half filled and filled orbitals.

Chapter- 3 Classification of Elements and Periodicity in Properties

From the exam's point of view, the elements' classification is very important. Multiple questions in the board exam and competitive exams are asked from this chapter. So learning all the concepts from this chapter is very important for the examination. You will also learn about s-block, p-block, d-block, and f-block elements from the periodic table, physical and chemical properties, and chemical reactivity trends from this chapter. By learning this chapter thoroughly, you will score well on your exam. 

Topics covered in this chapter are - In this chapter topics are discussed: a brief history of the development of the periodic table, significance of classification, the present form of the periodic table and modern periodic law, periodic trends in properties of elements – atomic radii, ionic radii, noble gas radii, ionisation enthalpy, electron gain enthalpy, electronegativity, and valence.

Chapter 4: Chemical Bonding and Molecular Structure

Chemistry is based on our surroundings and is called the central science. The topics discussed in Chapter 4 are – VSEPR Theory, Lewis structures, Valence Bond Theory, polar character of covalent bonds and hydrogen bonding. You will learn how to draw Lewis dot symbols for molecules, atoms and polyatomic ions. The solutions at esaral contain diagrams for each concept to provide a visual learning experience for the students.

Topics covered in this chapter are - Ionic bond, Valence electrons, covalent bond, bond parameters, Lewis structure, polar character of covalent bond, covalent character of ionic bond, resonance, geometry of covalent molecules, valence bond theory, VSEPR theory, concept of hybridization involving s, p and d orbitals and shapes of some simple molecules, molecular orbital theory of homonuclear diatomic molecules (qualitative idea only), hydrogen bond.

Chapter 5: States of Matter

In chapter 2, you will get to know about the intermolecular forces and how they affect the physical state of a substance. It deals with other concepts related to gaseous and liquid states of matter. You will be able to understand Boyle's Law, Charles ’ Law, Gay Lussac’s Law and Avogadro's Law, which have more marks as per the exam pattern. Problems on finding partial, critical temperature and pressure, Van der Waals force and other intermolecular forces are present in this chapter.

Topics covered in this chapter are -Three states of matter, intermolecular interactions, type of bonding, melting and boiling points, role of gas laws in elucidating the concept of the molecule, Boyle’s law, Gay Lussac’s law, Charles’ law, Avogadro’s law, ideal behaviour, empirical derivation of gas equations, Avogadro’s number, ideal gas equation, deviation from ideal behaviour, liquefaction of gases, critical temperature.
Liquid State – Vapour pressure, surface tension (qualitative idea only, no mathematical derivations) and viscosity.

Chapter 6: Thermodynamics

Thermodynamics is a branch of science which explains the relation between heat and other energy forms. On the basis of exchange of matter and energy, thermodynamic systems are divided into three types – open, closed and isolated systems. You will learn more about concepts like terms in thermodynamics, applications, calorimetry, enthalpies, spontaneity, Gibbs energy change and equilibrium. The problems in the NCERT Solutions are answered in a proper manner, completely based on the updated syllabus of the CBSE board.

Topics covered in this chapter are: concepts of system, types of systems, surroundings, heat, work, energy, extensive and intensive properties, and state functions.
The first law of thermodynamics includes internal energy and enthalpy, heat capacity and specific heat, measurement of ΔU and ΔH, Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, dilution and ionisation. Introduction of entropy as a state function, free energy change for spontaneous and nonspontaneous process and equilibrium.

Chapter 7: Equilibrium

In this chapter, you will learn about buffer solutions, equilibrium constant and the common ion effect. This chapter contains a lot of concepts, a thorough understanding of each of them is important to perform well in your final exam. The solutions which we are provided contain clear-cut explanations for each and every concept so that all the queries of the students are clarified. 

Topics covered in this chapter are - Solid liquid equilibrium, applications of equilibrium constant, factors affecting equilibria, acids, bases and salts, buffer solutions, etc. Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium – Le Chatelier’s principle; ionic equilibrium – ionisation of acids and bases, strong and weak electrolytes, degree of ionisation, concept of pH. Hydrolysis of salts (elementary idea), solubility product, buffer solutions, common ion effect (with illustrative examples).

Chapter 8: Redox Reactions

The fact here is that the field of electrochemistry deals with redox reactions. You need to learn this chapter to get good marks in the final exam. You will get questions based on the classical idea of redox reaction, redox reactions in terms of electron transfer reactions, oxidation number and electrode processes. Students are suggested to first complete the entire chapter using the NCERT textbook prescribed by the CBSE board.

Topics covered in this chapter are - In this chapter topics are discussed: concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions and applications of redox reactions.

Chapter 9: Organic Chemistry – Some Basic Principles and Techniques

When it comes to exam preparation, both organic and inorganic chemistry plays a key role in scoring good marks. In this chapter, you will get to know about organic compounds, structural representation, classification, nomenclature, isomerism, purification of organic compounds and quantitative analysis. If you are not able to learn these concepts using the NCERT textbook, then you can download the PDF of solutions, which are available on our site, for absolutely free.

Topics covered in this chapter are - In this chapter topics are discussed: General introduction, methods of purification, qualitative and quantitative analysis, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electromeric effect, resonance and hyperconjugation.
Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions; electrophiles and nucleophiles, types of organic reactions.

Chapter 13: Hydrocarbons

The study of properties, structure, reactions, composition and synthesis of organic compounds is called organic chemistry. It teaches you about concepts like alkanes and their preparation from alkyl halides, unsaturated hydrocarbons and carboxylic acids. You will also learn about the physical and chemical properties of alkanes as per the CBSE syllabus. As we know, this chapter is important from the exam point of view; you should highly concentrate on all the concepts and memorise them thoroughly to perform well in your exam.

Topics covered in this chapter are: Classification of hydrocarbons

Alkanes: IUPAC nomenclature, isomerism, conformations (ethane only), physical properties, chemical reactions, along with free radical mechanism of halogenation, combustion and pyrolysis.

Alkenes: IUPAC nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation; chemical reactions: addition of hydrogen, water, halogen, hydrogen halides (Markovnikov’s addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition.

Alkynes: IUPAC nomenclature, structure of triple bond (ethyne), physical properties, methods of preparation, chemical reactions: acidic character of alkynes, addition reaction of – hydrogen, hydrogen halides, halogens and water.

Aromatic hydrocarbons: Introduction, IUPAC nomenclature; Benzene: resonance, aromaticity; chemical properties: mechanism of electrophilic substitution – halogenation, nitration, sulphonation, Friedel-Crafts alkylation and acylation; directive influence of functional group in mono-substituted benzene; carcinogenicity and toxicity.

CBSE Marks Weightage and JEE Relevance: Chapter-Wise Breakdown (2026-27)

Use this table to prioritise your study time based on the marks potential in both CBSE Board Exams and JEE Main:

Note: Chemical Bonding, Thermodynamics, and Equilibrium together contribute the highest weightage in both CBSE Board Exams and JEE Main. Students should prioritise these chapters for maximum score improvement.

How Do NCERT Solutions Help You Score Higher in Board Exams? 

Are NCERT Solutions Enough for Class 11 Chemistry Board Exams?

For CBSE board exams, NCERT solutions alone cover approximately 85–90% of what you need. The board directly draws questions from NCERT exercises, examples, and in-text questions. Students who solve every NCERT question and understand the solution methodology rarely score below 85%.

For JEE Main and JEE Advanced, NCERT forms the base — but additional practice with previous year papers and advanced problem sets is essential. eSaral's structured JEE Chemistry modules are built on top of NCERT foundations, using the same step-by-step approach developed by faculty who have themselves cleared JEE with ranks like AIR-41.

What Makes a Good NCERT Solution?

Not all solutions available online follow CBSE's answer-writing conventions. A reliable NCERT solution should:

• Match the CBSE marking scheme — steps should be shown exactly as a board examiner expects
• Use clear, simple language — if you cannot explain it to a classmate, the solution is too complex
• Include diagrams where relevant — especially for chapters like Chemical Bonding and Hydrocarbons
• Flag common mistakes — good solutions point out where students typically lose marks

eSaral's solutions are prepared to these standards and verified against the latest CBSE syllabus. You can also browse the full library at NCERT Solutions – All Classes and Subjects or jump to NCERT Solutions for Class 12 Chemistry once you complete Class 11.

Benefits of Opting for Our NCERT Chemistry Class 11 Solutions

Chemistry is one of the fields of science. Whether you want to become an engineer or a doctor, chemistry will play an important role in it. To understand chemistry better, NCERT Class 11 Chemistry Solutions allows you to solve your doubts and thus helps you to perform great in your CBSE examinations and other examinations. 

Now the question comes: what is NCERT? Well, in simple terms, the short form of NCERT is the National Council of Educational Research and Training, which is a National board that publishes textbooks for students to understand the concepts in a very clear and easy way. NCERT not only provides textbooks for Chemistry but also provides many textbooks for different subjects as well. The books, which are published by NCERT, are well known for their well-researched, up-to-date, and understandable content. These books continue to be recommended by all schools that follow the CBSE curriculum. 

At eSaral, we aim to provide a simple way of teaching to students and help them to understand the basic concept of Chemistry NCERT class 11 Chemistry solutions PDF in a better way. We provide the solutions in PDF form so that you can access them in future without the internet. 

As we discussed earlier, when a student wishes to take up science during high school, chemistry is a mandatory subject. There are basically 2 combinations that you can take in the science stream. The first combination is Chemistry with Biology, and the second combination is Chemistry with Physics. No matter which combination you choose, chemistry is mandatory. 

Now coming to the basics of class 11 chemistry chapters, chemistry is a subject which deals with chemical reactions, the matter of objects, elements, atoms, molecules, noble gases and much more. To get the basics right in chemistry, at eSaral, we strongly recommend that you seek help from our NCERT Chemistry Class 11 Solutions. If your basics are strong, then your dreams of studying either at IIT or AIIMS will come true. To crack the entrance exams, your basics should be strong. 

• Quality of Solutions

Our team has formulated the study material in such a simple way that helps you to understand how a problem should be approached and how to solve it. Even our team of experts, with the help of their expertise, trains the students to solve problems at ease. 

• Prepared by Expert Teachers

Our expert team is very experienced, and with their experience, they know how to simplify the toughest questions, which are very important for exams.  

• Helps in Scoring Good Marks

These NCERT Solutions for Class 11 Chemistry are designed for you in a very simple language. This simplicity is maintained so that you can understand the matter easily, and this will help you in preparing thoroughly before the exams. All the questions and solutions are designed keeping in mind the present exam syllabus and pattern. If you follow our NCERT Solution Class 11 Chemistry, then you can be sure that you will get good marks in your exams. 

• Ease of Understanding/ Studying/Memorising

Class 11 chemistry NCERT solutions formulated by us are designed in such an easy way that you can understand and memorise the content and principles without having any problems in understanding the topic. All the solutions with proper explanations are given so that the basics of chemistry are clear, and it will help you in building the foundation of chemistry. 

Advantages of Opting for the NCERT Solutions Class 11 Chemistry Chapters

• Your study sessions will become more organised and productive. You can download the solutions for the chapters whenever you need and store them on your devices. And you can refer to them at your convenience and routine to find the right answers to the exercise questions.

• Using the NCERT textbook exercises as an evaluation tool will be more beneficial when you have the solutions in your hand. Complete preparing a chapter, and you can test your preparation level by solving the exercise questions given in the textbook. Calculate your performance by checking the answers given in the solutions. Through this, you can find out where you need to work harder and proceed’

• Resolve doubts in no time by referring to the CBSE class 11 chemistry NCERT solution and save your precious time for studying by resolving doubts faster and completing the syllabus faster.

For complete PCM coverage, explore NCERT Solutions for Class 11 Physics and NCERT Solutions for Class 11 Maths alongside your Chemistry preparation.

If you want structured chapter-wise video lessons, doubt-solving support, and JEE/NEET-aligned practice alongside these NCERT solutions, eSaral's Class 11 Chemistry course — taught by IIT Bombay faculty — is built exactly for that. Bookmark this page and return whenever you start a new chapter.